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Red Hat Product Errata RHSA-2026:96079 - Security Advisory
Issued:
2026-11-09
Updated:
2026-11-09

RHSA-2026:96079 - Security Advisory

  • Overview
  • Updated Packages

Synopsis

Important: thunderbird security update

Type/Severity

Security Advisory: Important

Red Hat Lightspeed patch analysis

Identify and remediate systems affected by this advisory.

View affected systems

Topic

An update for thunderbird is now available for Red Hat Enterprise Linux 10.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

Mozilla Thunderbird is a standalone mail and newsgroup client.

Security Fix(es):

  • expat: Expat: XML Injection via Malformed UTF-16 Input (CVE-2026-93990)
  • firefox: thunderbird: Privilege escalation in the DLL Services component (CVE-2026-100801)
  • thunderbird: thunderbird: Arbitrary code execution via integer overflow in libmime (CVE-2026-110247)
  • thunderbird: Use-after-free in S/MIME decryption during a security device password prompt (CVE-2026-113869)
  • firefox: thunderbird: Invalid pointer in the JavaScript Engine component (CVE-2026-117910)
  • firefox: thunderbird: Use-after-free in the Layout: Text and Fonts component (CVE-2026-117876)
  • firefox: thunderbird: Same-origin policy bypass in the DOM: Navigation component (CVE-2026-117860)
  • firefox: thunderbird: Sandbox escape due to use-after-free in the Graphics component (CVE-2026-117985)
  • firefox: thunderbird: Use-after-free in the DOM: Core & HTML component (CVE-2026-117887)
  • firefox: thunderbird: Use-after-free in the Graphics component (CVE-2026-117987)
  • firefox: thunderbird: Use-after-free in the DOM: Core & HTML component (CVE-2026-117943)
  • firefox: thunderbird: Privilege escalation in the DOM: UI Events & Focus Handling component (CVE-2026-117995)
  • firefox: thunderbird: Use-after-free in the Graphics: ImageLib component (CVE-2026-117908)
  • firefox: thunderbird: Use-after-free in the Layout component (CVE-2026-117934)
  • firefox: thunderbird: Use-after-free in the Audio/Video: Playback component (CVE-2026-117905)
  • firefox: thunderbird: Use-after-free in the Audio/Video component (CVE-2026-117923)
  • firefox: thunderbird: JIT miscompilation in the JavaScript Engine: JIT component (CVE-2026-117890)
  • firefox: thunderbird: Incorrect boundary conditions in the Layout: Tables component (CVE-2026-117879)
  • firefox: thunderbird: Use-after-free in the DOM: Core & HTML component (CVE-2026-117895)
  • firefox: thunderbird: Use-after-free in the DOM: CSS Object Model component (CVE-2026-117941)
  • firefox: thunderbird: Mitigation bypass in the DOM: Push Subscriptions component (CVE-2026-117998)
  • firefox: thunderbird: Use-after-free in the XML component (CVE-2026-117880)
  • firefox: thunderbird: Use-after-free in the Networking component (CVE-2026-117907)
  • firefox: thunderbird: Race condition in the IPC component (CVE-2026-117999)
  • firefox: thunderbird: Use-after-free in the DOM: Editor component (CVE-2026-117900)
  • firefox: thunderbird: Sandbox escape in the DOM: Networking component (CVE-2026-117868)
  • firefox: thunderbird: Privilege escalation due to use-after-free in the Graphics: Canvas2D component (CVE-2026-117866)
  • firefox: thunderbird: Use-after-free in the DOM: Core & HTML component (CVE-2026-117925)
  • firefox: thunderbird: Use-after-free in the Layout component (CVE-2026-117882)
  • firefox: thunderbird: Use-after-free in the CSS Parsing and Computation component (CVE-2026-117921)
  • firefox: thunderbird: Privilege escalation in the Toolkit component (CVE-2026-117981)
  • firefox: thunderbird: Use-after-free in the SVG component (CVE-2026-117914)
  • firefox: thunderbird: Incorrect boundary conditions in the Layout: Tables component (CVE-2026-117897)
  • firefox: thunderbird: Privilege escalation due to incorrect boundary conditions in the Networking component (CVE-2026-117862)
  • firefox: thunderbird: Use-after-free in the DOM: Core & HTML component (CVE-2026-117896)
  • firefox: Site isolation issue in the Networking: HTTP component (CVE-2026-117958)
  • firefox: thunderbird: Incorrect boundary conditions in the DOM: Core & HTML component (CVE-2026-117950)
  • firefox: thunderbird: Invalid pointer in the JavaScript Engine: JIT component (CVE-2026-117982)
  • firefox: thunderbird: Use-after-free in the JavaScript: GC component (CVE-2026-117865)
  • firefox: thunderbird: Use-after-free in the Graphics component (CVE-2026-117986)
  • firefox: thunderbird: Integer overflow in the Graphics: Text component (CVE-2026-117993)
  • firefox: thunderbird: Use-after-free in the Graphics component (CVE-2026-117980)
  • firefox: thunderbird: Use-after-free in the Audio/Video: Playback component (CVE-2026-117911)
  • firefox: thunderbird: Information disclosure in the Networking: HTTP component (CVE-2026-118000)
  • firefox: thunderbird: Use-after-free in the Layout component (CVE-2026-117867)
  • firefox: thunderbird: Same-origin policy bypass in the CSS Parsing and Computation component (CVE-2026-117912)
  • firefox: thunderbird: Spoofing issue in the DOM: Core & HTML component (CVE-2026-117960)
  • firefox: thunderbird: Sandbox escape in the Form Manager component (CVE-2026-117864)
  • firefox: thunderbird: Invalid pointer in the Graphics: WebRender component (CVE-2026-117917)
  • firefox: thunderbird: Use-after-free in the DOM: Events component (CVE-2026-117931)
  • firefox: thunderbird: Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component (CVE-2026-117988)
  • firefox: thunderbird: Invalid pointer in the Graphics component (CVE-2026-117871)
  • firefox: thunderbird: Use-after-free in the JavaScript Engine: JIT component (CVE-2026-117898)
  • firefox: thunderbird: Use-after-free in the Panning and Zooming component (CVE-2026-117964)
  • firefox: thunderbird: Incorrect boundary conditions in the Security: PSM component (CVE-2026-117893)
  • firefox: thunderbird: Privilege escalation due to use-after-free in the WebRTC: Networking component (CVE-2026-117892)
  • firefox: thunderbird: Use-after-free in the XSLT component (CVE-2026-117916)
  • firefox: thunderbird: Use-after-free in the Layout: Text and Fonts component (CVE-2026-117902)
  • firefox: thunderbird: Mitigation bypass in the DOM: Security component (CVE-2026-117967)
  • firefox: thunderbird: Use-after-free in the XML component (CVE-2026-117947)
  • firefox: thunderbird: Invalid pointer in the Nimbus Desktop Client component (CVE-2026-117956)
  • firefox: thunderbird: Use-after-free in the Layout: Scrolling and Overflow component (CVE-2026-117875)
  • firefox: thunderbird: Sandbox escape due to invalid pointer in the Graphics: WebRender component (CVE-2026-117975)
  • firefox: thunderbird: Incorrect boundary conditions in the XML component (CVE-2026-117945)
  • firefox: thunderbird: Use-after-free in the DOM: Core & HTML component (CVE-2026-117901)
  • firefox: thunderbird: Incorrect boundary conditions in the JavaScript Engine component (CVE-2026-117946)
  • firefox: thunderbird: Incorrect boundary conditions in the SVG component (CVE-2026-117926)
  • firefox: thunderbird: Use-after-free in the DOM: Core & HTML component (CVE-2026-117881)
  • firefox: thunderbird: Invalid pointer in the JavaScript Engine: JIT component (CVE-2026-117969)
  • firefox: thunderbird: Information disclosure in the CSS Parsing and Computation component (CVE-2026-117992)
  • firefox: thunderbird: Use-after-free in the DOM: Core & HTML component (CVE-2026-117940)
  • firefox: thunderbird: Incorrect boundary conditions in the DOM: Service Workers component (CVE-2026-117963)
  • firefox: thunderbird: Site isolation issue in the DOM: Service Workers component (CVE-2026-117959)
  • firefox: thunderbird: Other issue, use-after-free in the Storage: IndexedDB component (CVE-2026-117878)
  • firefox: thunderbird: Use-after-free in the SVG component (CVE-2026-117948)
  • firefox: thunderbird: Use-after-free in the DOM: Core & HTML component (CVE-2026-117932)
  • firefox: thunderbird: Incorrect boundary conditions in the Graphics: Text component (CVE-2026-117886)
  • firefox: thunderbird: Use-after-free in the Layout component (CVE-2026-117938)
  • firefox: thunderbird: Use-after-free in the SVG component (CVE-2026-117927)
  • firefox: thunderbird: Use-after-free in the XSLT component (CVE-2026-117924)
  • firefox: thunderbird: Use-after-free in the DOM: Core & HTML component (CVE-2026-117949)
  • firefox: thunderbird: Incorrect boundary conditions in the Layout: Scrolling and Overflow component (CVE-2026-117984)
  • firefox: thunderbird: Use-after-free in the SVG component (CVE-2026-117913)
  • firefox: thunderbird: Use-after-free in the DOM: Core & HTML component (CVE-2026-117936)
  • firefox: thunderbird: Invalid pointer in the JavaScript Engine component (CVE-2026-117937)
  • firefox: thunderbird: Use-after-free in the DOM: HTML Parser component (CVE-2026-117883)
  • firefox: thunderbird: Use-after-free in the Graphics component (CVE-2026-117972)
  • firefox: thunderbird: Use-after-free in the Internationalization component (CVE-2026-117874)
  • firefox: thunderbird: Use-after-free in the Layout: Grid component (CVE-2026-117885)
  • firefox: thunderbird: Incorrect boundary conditions in the Graphics component (CVE-2026-117978)
  • firefox: thunderbird: Use-after-free in the Layout component (CVE-2026-117944)
  • firefox: thunderbird: Information disclosure in the Networking: DNS component (CVE-2026-118003)
  • firefox: thunderbird: Use-after-free in the DOM: Core & HTML component (CVE-2026-117953)
  • firefox: thunderbird: Information disclosure due to race condition in the Networking component (CVE-2026-118002)
  • firefox: thunderbird: Use-after-free in the DOM: HTML Parser component (CVE-2026-117920)
  • firefox: thunderbird: Use-after-free in the Audio/Video component (CVE-2026-117903)
  • firefox: thunderbird: Incorrect boundary conditions in the JavaScript Engine: JIT component (CVE-2026-117942)
  • firefox: thunderbird: Uninitialized memory in the Graphics: Canvas2D component (CVE-2026-117888)
  • firefox: thunderbird: Incorrect boundary conditions in the WebRTC: Signaling component (CVE-2026-117894)
  • firefox: thunderbird: Use-after-free in the JavaScript: GC component (CVE-2026-117904)
  • firefox: thunderbird: JIT miscompilation in the JavaScript: WebAssembly component (CVE-2026-117955)
  • firefox: thunderbird: Use-after-free in the Networking: WebSockets component (CVE-2026-117922)
  • firefox: thunderbird: Sandbox escape due to incorrect boundary conditions in the Storage: Quota Manager component (CVE-2026-117962)
  • firefox: thunderbird: Other issue in the Console component (CVE-2026-117977)
  • firefox: thunderbird: Use-after-free in the DOM: Bindings (WebIDL) component (CVE-2026-117935)
  • firefox: thunderbird: Use-after-free in the DOM: Core & HTML component (CVE-2026-117919)
  • firefox: thunderbird: Use-after-free in the DOM: Core & HTML component (CVE-2026-117869)
  • firefox: thunderbird: Use-after-free in the JavaScript Engine: JIT component (CVE-2026-117891)
  • firefox: thunderbird: Use-after-free in the Networking component (CVE-2026-117884)
  • firefox: thunderbird: Use-after-free in the Networking: HTTP component (CVE-2026-117899)
  • firefox: thunderbird: Sandbox escape in the DOM: Navigation component (CVE-2026-117861)
  • firefox: thunderbird: Use-after-free in the JavaScript: GC component (CVE-2026-117909)
  • firefox: thunderbird: Same-origin policy bypass in the CSS Parsing and Computation component (CVE-2026-117928)
  • firefox: thunderbird: Frame poisoning in the CSS Parsing and Computation component (CVE-2026-117933)
  • firefox: thunderbird: Use-after-free in the Graphics component (CVE-2026-117989)
  • firefox: thunderbird: Use-after-free in the JavaScript: Standard Library component (CVE-2026-117872)
  • firefox: thunderbird: Incorrect boundary conditions in the JavaScript Engine component (CVE-2026-117889)
  • firefox: thunderbird: Incorrect boundary conditions in the Graphics: WebRender component (CVE-2026-117979)
  • firefox: thunderbird: Use-after-free in the DOM: Core & HTML component (CVE-2026-117968)
  • firefox: thunderbird: Use-after-free in the Graphics component (CVE-2026-117983)
  • firefox: thunderbird: Use-after-free in the Networking: DNS component (CVE-2026-117973)
  • firefox: thunderbird: Use-after-free in the DOM: Core & HTML component (CVE-2026-117929)
  • firefox: thunderbird: Uninitialized memory in the Networking component (CVE-2026-117952)
  • firefox: thunderbird: Incorrect boundary conditions in the Audio/Video: Playback component (CVE-2026-117873)
  • firefox: thunderbird: Site isolation issue in the DOM: Navigation component (CVE-2026-117976)
  • firefox: thunderbird: Use-after-free in the DOM: Core & HTML component (CVE-2026-117951)
  • firefox: thunderbird: Incorrect boundary conditions in the Layout: Block and Inline component (CVE-2026-117915)
  • firefox: thunderbird: Incorrect boundary conditions in the CSS Transitions and Animations component (CVE-2026-118004)
  • firefox: thunderbird: Use-after-free in the JavaScript: GC component (CVE-2026-117994)
  • firefox: thunderbird: Use-after-free in the XML component (CVE-2026-117939)
  • firefox: thunderbird: Information disclosure due to uninitialized memory in the Audio/Video component (CVE-2026-117863)
  • firefox: thunderbird: Incorrect boundary conditions in the Layout: Text and Fonts component (CVE-2026-117961)
  • firefox: thunderbird: Race condition in the Disability Access APIs component (CVE-2026-117970)
  • firefox: thunderbird: Use-after-free in the XML component (CVE-2026-117974)
  • firefox: thunderbird: Site isolation issue in the Networking: HTTP component (CVE-2026-117966)
  • firefox: thunderbird: Use-after-free in the Graphics: Canvas2D component (CVE-2026-117918)
  • firefox: thunderbird: Incorrect boundary conditions in the Layout: Text and Fonts component (CVE-2026-117991)
  • firefox: thunderbird: Sandbox escape due to use-after-free in the Widget component (CVE-2026-117997)
  • firefox: thunderbird: Incorrect boundary conditions in the WebRTC component (CVE-2026-117996)
  • firefox: thunderbird: Sandbox escape due to use-after-free in the Print Preview component (CVE-2026-117971)
  • firefox: thunderbird: Cryptographic issue in the WebRTC: Networking component (CVE-2026-117957)
  • firefox: thunderbird: Use-after-free in the JavaScript Engine component (CVE-2026-117870)
  • firefox: thunderbird: Use-after-free in the Layout: Text and Fonts component (CVE-2026-117877)
  • firefox: thunderbird: Sandbox escape due to incorrect boundary conditions in the Graphics: WebRender component (CVE-2026-117990)
  • firefox: thunderbird: Same-origin policy bypass in the Address Bar component (CVE-2026-117965)
  • firefox: thunderbird: Use-after-free in the DOM: Bindings (WebIDL) component (CVE-2026-117930)
  • firefox: thunderbird: Use-after-free in the CSS Parsing and Computation component (CVE-2026-117906)
  • firefox: thunderbird: Use-after-free in the Layout: Positioned component (CVE-2026-117954)
  • thunderbird: Bypass of remote UNC path restriction in mailbox: URLs (CVE-2026-118176)
  • thunderbird: Calendar discovery accepted local file and remote network share locations (CVE-2026-118177)
  • thunderbird: Matrix homeserver could redirect the chat session to a local file or network share (CVE-2026-118180)
  • thunderbird: Content of other messages could be included when replying to a crafted message (CVE-2026-118175)
  • thunderbird: Displaying a message could load an attacker-chosen URL through an OpenPGP key attachment (CVE-2026-118174)
  • thunderbird: Request forgery via news: links (CVE-2026-118179)
  • firefox: thunderbird: RSS feed could redirect its subscription to a local file or network share (CVE-2026-118178)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

  • Red Hat Enterprise Linux for x86_64 10 x86_64
  • Red Hat Enterprise Linux for x86_64 - Extended Update Support 10.2 x86_64
  • Red Hat Enterprise Linux for IBM z Systems 10 s390x
  • Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 10.2 s390x
  • Red Hat Enterprise Linux for Power, little endian 10 ppc64le
  • Red Hat Enterprise Linux for Power, little endian - Extended Update Support 10.2 ppc64le
  • Red Hat Enterprise Linux for ARM 64 10 aarch64
  • Red Hat Enterprise Linux for ARM 64 - Extended Update Support 10.2 aarch64
  • Red Hat Enterprise Linux for ARM 64 - 4 years of updates 10.2 aarch64
  • Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 10.2 s390x
  • Red Hat Enterprise Linux for Power, little endian - 4 years of support 10.2 ppc64le
  • Red Hat Enterprise Linux for x86_64 - 4 years of updates 10.2 x86_64
  • Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 10.2 x86_64
  • Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle 10.2 aarch64
  • Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle 10.2 ppc64le
  • Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle 10.2 s390x

Fixes

  • BZ - 2538967 - CVE-2026-93990 expat: Expat: XML Injection via Malformed UTF-16 Input
  • BZ - 2543116 - CVE-2026-100801 firefox: thunderbird: Privilege escalation in the DLL Services component
  • BZ - 2550753 - CVE-2026-110247 thunderbird: thunderbird: Arbitrary code execution via integer overflow in libmime
  • BZ - 2556402 - CVE-2026-113869 thunderbird: Use-after-free in S/MIME decryption during a security device password prompt
  • BZ - 2562012 - CVE-2026-117876 firefox: thunderbird: Use-after-free in the Layout: Text and Fonts component
  • BZ - 2562013 - CVE-2026-117860 firefox: thunderbird: Same-origin policy bypass in the DOM: Navigation component
  • BZ - 2562014 - CVE-2026-117985 firefox: thunderbird: Sandbox escape due to use-after-free in the Graphics component
  • BZ - 2562016 - CVE-2026-117887 firefox: thunderbird: Use-after-free in the DOM: Core & HTML component
  • BZ - 2562017 - CVE-2026-117987 firefox: thunderbird: Use-after-free in the Graphics component
  • BZ - 2562027 - CVE-2026-117941 firefox: thunderbird: Use-after-free in the DOM: CSS Object Model component
  • BZ - 2562029 - CVE-2026-117880 firefox: thunderbird: Use-after-free in the XML component
  • BZ - 2562032 - CVE-2026-117900 firefox: thunderbird: Use-after-free in the DOM: Editor component
  • BZ - 2562035 - CVE-2026-117866 firefox: thunderbird: Privilege escalation due to use-after-free in the Graphics: Canvas2D component
  • BZ - 2562037 - CVE-2026-117925 firefox: thunderbird: Use-after-free in the DOM: Core & HTML component
  • BZ - 2562038 - CVE-2026-117882 firefox: thunderbird: Use-after-free in the Layout component
  • BZ - 2562058 - CVE-2026-117896 firefox: thunderbird: Use-after-free in the DOM: Core & HTML component
  • BZ - 2562068 - CVE-2026-117865 firefox: thunderbird: Use-after-free in the JavaScript: GC component
  • BZ - 2562071 - CVE-2026-117986 firefox: thunderbird: Use-after-free in the Graphics component
  • BZ - 2562075 - CVE-2026-117980 firefox: thunderbird: Use-after-free in the Graphics component
  • BZ - 2562095 - CVE-2026-117931 firefox: thunderbird: Use-after-free in the DOM: Events component
  • BZ - 2562096 - CVE-2026-117988 firefox: thunderbird: Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component
  • BZ - 2562098 - CVE-2026-117898 firefox: thunderbird: Use-after-free in the JavaScript Engine: JIT component
  • BZ - 2562100 - CVE-2026-117964 firefox: thunderbird: Use-after-free in the Panning and Zooming component
  • BZ - 2562103 - CVE-2026-117892 firefox: thunderbird: Privilege escalation due to use-after-free in the WebRTC: Networking component
  • BZ - 2562105 - CVE-2026-117916 firefox: thunderbird: Use-after-free in the XSLT component
  • BZ - 2562106 - CVE-2026-117902 firefox: thunderbird: Use-after-free in the Layout: Text and Fonts component
  • BZ - 2562114 - CVE-2026-117875 firefox: thunderbird: Use-after-free in the Layout: Scrolling and Overflow component
  • BZ - 2562135 - CVE-2026-117881 firefox: thunderbird: Use-after-free in the DOM: Core & HTML component
  • BZ - 2562148 - CVE-2026-117878 firefox: thunderbird: Other issue, use-after-free in the Storage: IndexedDB component
  • BZ - 2562157 - CVE-2026-117927 firefox: thunderbird: Use-after-free in the SVG component
  • BZ - 2562160 - CVE-2026-117949 firefox: thunderbird: Use-after-free in the DOM: Core & HTML component
  • BZ - 2562162 - CVE-2026-117913 firefox: thunderbird: Use-after-free in the SVG component
  • BZ - 2562164 - CVE-2026-117936 firefox: thunderbird: Use-after-free in the DOM: Core & HTML component
  • BZ - 2562168 - CVE-2026-117883 firefox: thunderbird: Use-after-free in the DOM: HTML Parser component
  • BZ - 2562172 - CVE-2026-117874 firefox: thunderbird: Use-after-free in the Internationalization component
  • BZ - 2562183 - CVE-2026-117920 firefox: thunderbird: Use-after-free in the DOM: HTML Parser component
  • BZ - 2562204 - CVE-2026-117935 firefox: thunderbird: Use-after-free in the DOM: Bindings (WebIDL) component
  • BZ - 2562206 - CVE-2026-117919 firefox: thunderbird: Use-after-free in the DOM: Core & HTML component
  • BZ - 2562209 - CVE-2026-117891 firefox: thunderbird: Use-after-free in the JavaScript Engine: JIT component
  • BZ - 2562221 - CVE-2026-117872 firefox: thunderbird: Use-after-free in the JavaScript: Standard Library component
  • BZ - 2562227 - CVE-2026-117973 firefox: thunderbird: Use-after-free in the Networking: DNS component
  • BZ - 2562234 - CVE-2026-117951 firefox: thunderbird: Use-after-free in the DOM: Core & HTML component
  • BZ - 2562243 - CVE-2026-117974 firefox: thunderbird: Use-after-free in the XML component
  • BZ - 2562250 - CVE-2026-117997 firefox: thunderbird: Sandbox escape due to use-after-free in the Widget component
  • BZ - 2562255 - CVE-2026-117971 firefox: thunderbird: Sandbox escape due to use-after-free in the Print Preview component
  • BZ - 2562269 - CVE-2026-117877 firefox: thunderbird: Use-after-free in the Layout: Text and Fonts component
  • BZ - 2562276 - CVE-2026-117965 firefox: thunderbird: Same-origin policy bypass in the Address Bar component
  • BZ - 2562280 - CVE-2026-117930 firefox: thunderbird: Use-after-free in the DOM: Bindings (WebIDL) component
  • BZ - 2562281 - CVE-2026-117906 firefox: thunderbird: Use-after-free in the CSS Parsing and Computation component
  • BZ - 2562284 - CVE-2026-117954 firefox: thunderbird: Use-after-free in the Layout: Positioned component
  • BZ - 2562313 - CVE-2026-118176 thunderbird: Bypass of remote UNC path restriction in mailbox: URLs
  • BZ - 2562318 - CVE-2026-118177 thunderbird: Calendar discovery accepted local file and remote network share locations
  • BZ - 2562320 - CVE-2026-118180 thunderbird: Matrix homeserver could redirect the chat session to a local file or network share
  • BZ - 2562323 - CVE-2026-118175 thunderbird: Content of other messages could be included when replying to a crafted message
  • BZ - 2562325 - CVE-2026-118174 thunderbird: Displaying a message could load an attacker-chosen URL through an OpenPGP key attachment
  • BZ - 2562326 - CVE-2026-118179 thunderbird: Request forgery via news: links
  • BZ - 2567087 - CVE-2026-118178 firefox: thunderbird: RSS feed could redirect its subscription to a local file or network share

CVEs

  • CVE-2026-93990
  • CVE-2026-100801
  • CVE-2026-110247
  • CVE-2026-113869
  • CVE-2026-117860
  • CVE-2026-117861
  • CVE-2026-117862
  • CVE-2026-117863
  • CVE-2026-117864
  • CVE-2026-117865
  • CVE-2026-117866
  • CVE-2026-117867
  • CVE-2026-117868
  • CVE-2026-117869
  • CVE-2026-117870
  • CVE-2026-117871
  • CVE-2026-117872
  • CVE-2026-117873
  • CVE-2026-117874
  • CVE-2026-117875
  • CVE-2026-117876
  • CVE-2026-117877
  • CVE-2026-117878
  • CVE-2026-117879
  • CVE-2026-117880
  • CVE-2026-117881
  • CVE-2026-117882
  • CVE-2026-117883
  • CVE-2026-117884
  • CVE-2026-117885
  • CVE-2026-117886
  • CVE-2026-117887
  • CVE-2026-117888
  • CVE-2026-117889
  • CVE-2026-117890
  • CVE-2026-117891
  • CVE-2026-117892
  • CVE-2026-117893
  • CVE-2026-117894
  • CVE-2026-117895
  • CVE-2026-117896
  • CVE-2026-117897
  • CVE-2026-117898
  • CVE-2026-117899
  • CVE-2026-117900
  • CVE-2026-117901
  • CVE-2026-117902
  • CVE-2026-117903
  • CVE-2026-117904
  • CVE-2026-117905
  • CVE-2026-117906
  • CVE-2026-117907
  • CVE-2026-117908
  • CVE-2026-117909
  • CVE-2026-117910
  • CVE-2026-117911
  • CVE-2026-117912
  • CVE-2026-117913
  • CVE-2026-117914
  • CVE-2026-117915
  • CVE-2026-117916
  • CVE-2026-117917
  • CVE-2026-117918
  • CVE-2026-117919
  • CVE-2026-117920
  • CVE-2026-117921
  • CVE-2026-117922
  • CVE-2026-117923
  • CVE-2026-117924
  • CVE-2026-117925
  • CVE-2026-117926
  • CVE-2026-117927
  • CVE-2026-117928
  • CVE-2026-117929
  • CVE-2026-117930
  • CVE-2026-117931
  • CVE-2026-117932
  • CVE-2026-117933
  • CVE-2026-117934
  • CVE-2026-117935
  • CVE-2026-117936
  • CVE-2026-117937
  • CVE-2026-117938
  • CVE-2026-117939
  • CVE-2026-117940
  • CVE-2026-117941
  • CVE-2026-117942
  • CVE-2026-117943
  • CVE-2026-117944
  • CVE-2026-117945
  • CVE-2026-117946
  • CVE-2026-117947
  • CVE-2026-117948
  • CVE-2026-117949
  • CVE-2026-117950
  • CVE-2026-117951
  • CVE-2026-117952
  • CVE-2026-117953
  • CVE-2026-117954
  • CVE-2026-117955
  • CVE-2026-117956
  • CVE-2026-117957
  • CVE-2026-117958
  • CVE-2026-117959
  • CVE-2026-117960
  • CVE-2026-117961
  • CVE-2026-117962
  • CVE-2026-117963
  • CVE-2026-117964
  • CVE-2026-117965
  • CVE-2026-117966
  • CVE-2026-117967
  • CVE-2026-117968
  • CVE-2026-117969
  • CVE-2026-117970
  • CVE-2026-117971
  • CVE-2026-117972
  • CVE-2026-117973
  • CVE-2026-117974
  • CVE-2026-117975
  • CVE-2026-117976
  • CVE-2026-117977
  • CVE-2026-117978
  • CVE-2026-117979
  • CVE-2026-117980
  • CVE-2026-117981
  • CVE-2026-117982
  • CVE-2026-117983
  • CVE-2026-117984
  • CVE-2026-117985
  • CVE-2026-117986
  • CVE-2026-117987
  • CVE-2026-117988
  • CVE-2026-117989
  • CVE-2026-117990
  • CVE-2026-117991
  • CVE-2026-117992
  • CVE-2026-117993
  • CVE-2026-117994
  • CVE-2026-117995
  • CVE-2026-117996
  • CVE-2026-117997
  • CVE-2026-117998
  • CVE-2026-117999
  • CVE-2026-118000
  • CVE-2026-118002
  • CVE-2026-118003
  • CVE-2026-118004
  • CVE-2026-118174
  • CVE-2026-118175
  • CVE-2026-118176
  • CVE-2026-118177
  • CVE-2026-118178
  • CVE-2026-118179
  • CVE-2026-118180

References

  • https://access.redhat.com/security/updates/classification/#important
Note: More recent versions of these packages may be available. Click a package name for more details.

Red Hat Enterprise Linux for x86_64 10

SRPM
thunderbird-153.6.0-1.el10_2.src.rpm SHA-256: 898185707a313499fbb9188799183993914882c6e685edb42a9ab00ee7ae04bb
x86_64
thunderbird-153.6.0-1.el10_2.x86_64.rpm SHA-256: 5404d77018e05a7bf9c134179ba814efa2232796315b04419472053e58375c56
thunderbird-debuginfo-153.6.0-1.el10_2.x86_64.rpm SHA-256: 33da756f491e1acaf1eacbab353d04b7912cb2c87edd0d34e0d35f27f7371a89
thunderbird-debugsource-153.6.0-1.el10_2.x86_64.rpm SHA-256: 3cb9ce7e07c8aa8e7a905f401c07786fd9c0b5ce17e152a38a1c4a6a24a677d2

Red Hat Enterprise Linux for x86_64 - Extended Update Support 10.2

SRPM
thunderbird-153.6.0-1.el10_2.src.rpm SHA-256: 898185707a313499fbb9188799183993914882c6e685edb42a9ab00ee7ae04bb
x86_64
thunderbird-153.6.0-1.el10_2.x86_64.rpm SHA-256: 5404d77018e05a7bf9c134179ba814efa2232796315b04419472053e58375c56
thunderbird-debuginfo-153.6.0-1.el10_2.x86_64.rpm SHA-256: 33da756f491e1acaf1eacbab353d04b7912cb2c87edd0d34e0d35f27f7371a89
thunderbird-debugsource-153.6.0-1.el10_2.x86_64.rpm SHA-256: 3cb9ce7e07c8aa8e7a905f401c07786fd9c0b5ce17e152a38a1c4a6a24a677d2

Red Hat Enterprise Linux for IBM z Systems 10

SRPM
thunderbird-153.6.0-1.el10_2.src.rpm SHA-256: 898185707a313499fbb9188799183993914882c6e685edb42a9ab00ee7ae04bb
s390x
thunderbird-153.6.0-1.el10_2.s390x.rpm SHA-256: acaecec3ebd664542299af27b2fa0bbd42177f0d56ee1bc9bffdfdb2930c967b
thunderbird-debuginfo-153.6.0-1.el10_2.s390x.rpm SHA-256: 2840a536ff77376397a610726509944524f3b6ce2c970d0f467809936c524f5c
thunderbird-debugsource-153.6.0-1.el10_2.s390x.rpm SHA-256: 6db8b2904f3b3686557d71a86243d87c3f700c6d7930d476a805175def94fa06

Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 10.2

SRPM
thunderbird-153.6.0-1.el10_2.src.rpm SHA-256: 898185707a313499fbb9188799183993914882c6e685edb42a9ab00ee7ae04bb
s390x
thunderbird-153.6.0-1.el10_2.s390x.rpm SHA-256: acaecec3ebd664542299af27b2fa0bbd42177f0d56ee1bc9bffdfdb2930c967b
thunderbird-debuginfo-153.6.0-1.el10_2.s390x.rpm SHA-256: 2840a536ff77376397a610726509944524f3b6ce2c970d0f467809936c524f5c
thunderbird-debugsource-153.6.0-1.el10_2.s390x.rpm SHA-256: 6db8b2904f3b3686557d71a86243d87c3f700c6d7930d476a805175def94fa06

Red Hat Enterprise Linux for Power, little endian 10

SRPM
thunderbird-153.6.0-1.el10_2.src.rpm SHA-256: 898185707a313499fbb9188799183993914882c6e685edb42a9ab00ee7ae04bb
ppc64le
thunderbird-153.6.0-1.el10_2.ppc64le.rpm SHA-256: 94f820b872cb008864ce292cfae46bbbe3f70d5df25e3f0aaf60188b4d8f1c94
thunderbird-debuginfo-153.6.0-1.el10_2.ppc64le.rpm SHA-256: aee1e6936242b6b17797c2c047bf98528db9842ea64d3c8a7647cfc0369aa387
thunderbird-debugsource-153.6.0-1.el10_2.ppc64le.rpm SHA-256: eba7ccf86576d4525ef7f628d144e70284f8d79beb5a0f3487f9beb9f1560007

Red Hat Enterprise Linux for Power, little endian - Extended Update Support 10.2

SRPM
thunderbird-153.6.0-1.el10_2.src.rpm SHA-256: 898185707a313499fbb9188799183993914882c6e685edb42a9ab00ee7ae04bb
ppc64le
thunderbird-153.6.0-1.el10_2.ppc64le.rpm SHA-256: 94f820b872cb008864ce292cfae46bbbe3f70d5df25e3f0aaf60188b4d8f1c94
thunderbird-debuginfo-153.6.0-1.el10_2.ppc64le.rpm SHA-256: aee1e6936242b6b17797c2c047bf98528db9842ea64d3c8a7647cfc0369aa387
thunderbird-debugsource-153.6.0-1.el10_2.ppc64le.rpm SHA-256: eba7ccf86576d4525ef7f628d144e70284f8d79beb5a0f3487f9beb9f1560007

Red Hat Enterprise Linux for ARM 64 10

SRPM
thunderbird-153.6.0-1.el10_2.src.rpm SHA-256: 898185707a313499fbb9188799183993914882c6e685edb42a9ab00ee7ae04bb
aarch64
thunderbird-153.6.0-1.el10_2.aarch64.rpm SHA-256: e7a43bc8ad1f050d6e4b53e6137287dc5baf6d2de5d856ea59d6a9434cc01300
thunderbird-debuginfo-153.6.0-1.el10_2.aarch64.rpm SHA-256: ad3d0a56e306adea17b00ed8a01bd4e476834a23fef2e2999bf4e82186b50874
thunderbird-debugsource-153.6.0-1.el10_2.aarch64.rpm SHA-256: 395d31fed421ada5ab33331f4ff0c9ff00bdd9a6ff95f6be8ffda4a385d4d159

Red Hat Enterprise Linux for ARM 64 - Extended Update Support 10.2

SRPM
thunderbird-153.6.0-1.el10_2.src.rpm SHA-256: 898185707a313499fbb9188799183993914882c6e685edb42a9ab00ee7ae04bb
aarch64
thunderbird-153.6.0-1.el10_2.aarch64.rpm SHA-256: e7a43bc8ad1f050d6e4b53e6137287dc5baf6d2de5d856ea59d6a9434cc01300
thunderbird-debuginfo-153.6.0-1.el10_2.aarch64.rpm SHA-256: ad3d0a56e306adea17b00ed8a01bd4e476834a23fef2e2999bf4e82186b50874
thunderbird-debugsource-153.6.0-1.el10_2.aarch64.rpm SHA-256: 395d31fed421ada5ab33331f4ff0c9ff00bdd9a6ff95f6be8ffda4a385d4d159

Red Hat Enterprise Linux for ARM 64 - 4 years of updates 10.2

SRPM
thunderbird-153.6.0-1.el10_2.src.rpm SHA-256: 898185707a313499fbb9188799183993914882c6e685edb42a9ab00ee7ae04bb
aarch64
thunderbird-153.6.0-1.el10_2.aarch64.rpm SHA-256: e7a43bc8ad1f050d6e4b53e6137287dc5baf6d2de5d856ea59d6a9434cc01300
thunderbird-debuginfo-153.6.0-1.el10_2.aarch64.rpm SHA-256: ad3d0a56e306adea17b00ed8a01bd4e476834a23fef2e2999bf4e82186b50874
thunderbird-debugsource-153.6.0-1.el10_2.aarch64.rpm SHA-256: 395d31fed421ada5ab33331f4ff0c9ff00bdd9a6ff95f6be8ffda4a385d4d159

Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 10.2

SRPM
thunderbird-153.6.0-1.el10_2.src.rpm SHA-256: 898185707a313499fbb9188799183993914882c6e685edb42a9ab00ee7ae04bb
s390x
thunderbird-153.6.0-1.el10_2.s390x.rpm SHA-256: acaecec3ebd664542299af27b2fa0bbd42177f0d56ee1bc9bffdfdb2930c967b
thunderbird-debuginfo-153.6.0-1.el10_2.s390x.rpm SHA-256: 2840a536ff77376397a610726509944524f3b6ce2c970d0f467809936c524f5c
thunderbird-debugsource-153.6.0-1.el10_2.s390x.rpm SHA-256: 6db8b2904f3b3686557d71a86243d87c3f700c6d7930d476a805175def94fa06

Red Hat Enterprise Linux for Power, little endian - 4 years of support 10.2

SRPM
thunderbird-153.6.0-1.el10_2.src.rpm SHA-256: 898185707a313499fbb9188799183993914882c6e685edb42a9ab00ee7ae04bb
ppc64le
thunderbird-153.6.0-1.el10_2.ppc64le.rpm SHA-256: 94f820b872cb008864ce292cfae46bbbe3f70d5df25e3f0aaf60188b4d8f1c94
thunderbird-debuginfo-153.6.0-1.el10_2.ppc64le.rpm SHA-256: aee1e6936242b6b17797c2c047bf98528db9842ea64d3c8a7647cfc0369aa387
thunderbird-debugsource-153.6.0-1.el10_2.ppc64le.rpm SHA-256: eba7ccf86576d4525ef7f628d144e70284f8d79beb5a0f3487f9beb9f1560007

Red Hat Enterprise Linux for x86_64 - 4 years of updates 10.2

SRPM
thunderbird-153.6.0-1.el10_2.src.rpm SHA-256: 898185707a313499fbb9188799183993914882c6e685edb42a9ab00ee7ae04bb
x86_64
thunderbird-153.6.0-1.el10_2.x86_64.rpm SHA-256: 5404d77018e05a7bf9c134179ba814efa2232796315b04419472053e58375c56
thunderbird-debuginfo-153.6.0-1.el10_2.x86_64.rpm SHA-256: 33da756f491e1acaf1eacbab353d04b7912cb2c87edd0d34e0d35f27f7371a89
thunderbird-debugsource-153.6.0-1.el10_2.x86_64.rpm SHA-256: 3cb9ce7e07c8aa8e7a905f401c07786fd9c0b5ce17e152a38a1c4a6a24a677d2

Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 10.2

SRPM
thunderbird-153.6.0-1.el10_2.src.rpm SHA-256: 898185707a313499fbb9188799183993914882c6e685edb42a9ab00ee7ae04bb
x86_64
thunderbird-153.6.0-1.el10_2.x86_64.rpm SHA-256: 5404d77018e05a7bf9c134179ba814efa2232796315b04419472053e58375c56
thunderbird-debuginfo-153.6.0-1.el10_2.x86_64.rpm SHA-256: 33da756f491e1acaf1eacbab353d04b7912cb2c87edd0d34e0d35f27f7371a89
thunderbird-debugsource-153.6.0-1.el10_2.x86_64.rpm SHA-256: 3cb9ce7e07c8aa8e7a905f401c07786fd9c0b5ce17e152a38a1c4a6a24a677d2

Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle 10.2

SRPM
thunderbird-153.6.0-1.el10_2.src.rpm SHA-256: 898185707a313499fbb9188799183993914882c6e685edb42a9ab00ee7ae04bb
aarch64
thunderbird-153.6.0-1.el10_2.aarch64.rpm SHA-256: e7a43bc8ad1f050d6e4b53e6137287dc5baf6d2de5d856ea59d6a9434cc01300
thunderbird-debuginfo-153.6.0-1.el10_2.aarch64.rpm SHA-256: ad3d0a56e306adea17b00ed8a01bd4e476834a23fef2e2999bf4e82186b50874
thunderbird-debugsource-153.6.0-1.el10_2.aarch64.rpm SHA-256: 395d31fed421ada5ab33331f4ff0c9ff00bdd9a6ff95f6be8ffda4a385d4d159

Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle 10.2

SRPM
thunderbird-153.6.0-1.el10_2.src.rpm SHA-256: 898185707a313499fbb9188799183993914882c6e685edb42a9ab00ee7ae04bb
ppc64le
thunderbird-153.6.0-1.el10_2.ppc64le.rpm SHA-256: 94f820b872cb008864ce292cfae46bbbe3f70d5df25e3f0aaf60188b4d8f1c94
thunderbird-debuginfo-153.6.0-1.el10_2.ppc64le.rpm SHA-256: aee1e6936242b6b17797c2c047bf98528db9842ea64d3c8a7647cfc0369aa387
thunderbird-debugsource-153.6.0-1.el10_2.ppc64le.rpm SHA-256: eba7ccf86576d4525ef7f628d144e70284f8d79beb5a0f3487f9beb9f1560007

Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle 10.2

SRPM
thunderbird-153.6.0-1.el10_2.src.rpm SHA-256: 898185707a313499fbb9188799183993914882c6e685edb42a9ab00ee7ae04bb
s390x
thunderbird-153.6.0-1.el10_2.s390x.rpm SHA-256: acaecec3ebd664542299af27b2fa0bbd42177f0d56ee1bc9bffdfdb2930c967b
thunderbird-debuginfo-153.6.0-1.el10_2.s390x.rpm SHA-256: 2840a536ff77376397a610726509944524f3b6ce2c970d0f467809936c524f5c
thunderbird-debugsource-153.6.0-1.el10_2.s390x.rpm SHA-256: 6db8b2904f3b3686557d71a86243d87c3f700c6d7930d476a805175def94fa06

The Red Hat security contact is secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.

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