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Red Hat Product Errata RHSA-2026:96081 - Security Advisory
Issued:
2026-11-09
Updated:
2026-11-09

RHSA-2026:96081 - 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 9.

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 9 x86_64
  • Red Hat Enterprise Linux for x86_64 - Extended Update Support 9.8 x86_64
  • Red Hat Enterprise Linux for IBM z Systems 9 s390x
  • Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 9.8 s390x
  • Red Hat Enterprise Linux for Power, little endian 9 ppc64le
  • Red Hat Enterprise Linux for Power, little endian - Extended Update Support 9.8 ppc64le
  • Red Hat Enterprise Linux for ARM 64 9 aarch64
  • Red Hat Enterprise Linux for ARM 64 - Extended Update Support 9.8 aarch64
  • Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 9.8 ppc64le
  • Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.8 x86_64
  • Red Hat Enterprise Linux for ARM 64 - 4 years of updates 9.8 aarch64
  • Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 9.8 s390x
  • Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 9.8 x86_64
  • Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle 9.8 aarch64
  • Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle 9.8 ppc64le
  • Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle 9.8 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 9

SRPM
thunderbird-153.6.0-1.el9_8.src.rpm SHA-256: f2453673661f4d42203322c18bed2b7a2ef6a7d46daa3447b37e152e908261f0
x86_64
thunderbird-153.6.0-1.el9_8.x86_64.rpm SHA-256: 5f90621f3f4b926f76098af2814537c2b3cf458d99e8d33c6995627df67fa0f4
thunderbird-debuginfo-153.6.0-1.el9_8.x86_64.rpm SHA-256: aa812c2a48ea2cda970e85573bebae5876c171ed97be5cd1bc117e2f89b2a6c9
thunderbird-debugsource-153.6.0-1.el9_8.x86_64.rpm SHA-256: b3742eee719f082f6c0f3b1a955f192d7e3d0dd6d325b1f254903253b9f8e81c

Red Hat Enterprise Linux for x86_64 - Extended Update Support 9.8

SRPM
thunderbird-153.6.0-1.el9_8.src.rpm SHA-256: f2453673661f4d42203322c18bed2b7a2ef6a7d46daa3447b37e152e908261f0
x86_64
thunderbird-153.6.0-1.el9_8.x86_64.rpm SHA-256: 5f90621f3f4b926f76098af2814537c2b3cf458d99e8d33c6995627df67fa0f4
thunderbird-debuginfo-153.6.0-1.el9_8.x86_64.rpm SHA-256: aa812c2a48ea2cda970e85573bebae5876c171ed97be5cd1bc117e2f89b2a6c9
thunderbird-debugsource-153.6.0-1.el9_8.x86_64.rpm SHA-256: b3742eee719f082f6c0f3b1a955f192d7e3d0dd6d325b1f254903253b9f8e81c

Red Hat Enterprise Linux for IBM z Systems 9

SRPM
thunderbird-153.6.0-1.el9_8.src.rpm SHA-256: f2453673661f4d42203322c18bed2b7a2ef6a7d46daa3447b37e152e908261f0
s390x
thunderbird-153.6.0-1.el9_8.s390x.rpm SHA-256: 1beb8af1313ad65d3a5af39782d50c71a4cf8c0df85bb9760261020871d2b7d4
thunderbird-debuginfo-153.6.0-1.el9_8.s390x.rpm SHA-256: 6285ecb7f8f9651eab6b1c7f2c0f400ca58a20a19dc8f4d424d2c45ad23c400a
thunderbird-debugsource-153.6.0-1.el9_8.s390x.rpm SHA-256: cfb324a34a5c9f0f77280b0e147c3e94b73553b29a64af5c20307a2cebc261d5

Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 9.8

SRPM
thunderbird-153.6.0-1.el9_8.src.rpm SHA-256: f2453673661f4d42203322c18bed2b7a2ef6a7d46daa3447b37e152e908261f0
s390x
thunderbird-153.6.0-1.el9_8.s390x.rpm SHA-256: 1beb8af1313ad65d3a5af39782d50c71a4cf8c0df85bb9760261020871d2b7d4
thunderbird-debuginfo-153.6.0-1.el9_8.s390x.rpm SHA-256: 6285ecb7f8f9651eab6b1c7f2c0f400ca58a20a19dc8f4d424d2c45ad23c400a
thunderbird-debugsource-153.6.0-1.el9_8.s390x.rpm SHA-256: cfb324a34a5c9f0f77280b0e147c3e94b73553b29a64af5c20307a2cebc261d5

Red Hat Enterprise Linux for Power, little endian 9

SRPM
thunderbird-153.6.0-1.el9_8.src.rpm SHA-256: f2453673661f4d42203322c18bed2b7a2ef6a7d46daa3447b37e152e908261f0
ppc64le
thunderbird-153.6.0-1.el9_8.ppc64le.rpm SHA-256: b4ef9e39a054af9f4ab479dea7493857e53f9311e5fbc38ee83a72b041964b97
thunderbird-debuginfo-153.6.0-1.el9_8.ppc64le.rpm SHA-256: 5f0f4d3feb5e20ee598efb62a26ea3596cc007f6761c153a82328d1dccfd576b
thunderbird-debugsource-153.6.0-1.el9_8.ppc64le.rpm SHA-256: 2d33aa9e3d32fcd4b34a8514efc041b6d81b5bf6672443dfe20a3d46281c0496

Red Hat Enterprise Linux for Power, little endian - Extended Update Support 9.8

SRPM
thunderbird-153.6.0-1.el9_8.src.rpm SHA-256: f2453673661f4d42203322c18bed2b7a2ef6a7d46daa3447b37e152e908261f0
ppc64le
thunderbird-153.6.0-1.el9_8.ppc64le.rpm SHA-256: b4ef9e39a054af9f4ab479dea7493857e53f9311e5fbc38ee83a72b041964b97
thunderbird-debuginfo-153.6.0-1.el9_8.ppc64le.rpm SHA-256: 5f0f4d3feb5e20ee598efb62a26ea3596cc007f6761c153a82328d1dccfd576b
thunderbird-debugsource-153.6.0-1.el9_8.ppc64le.rpm SHA-256: 2d33aa9e3d32fcd4b34a8514efc041b6d81b5bf6672443dfe20a3d46281c0496

Red Hat Enterprise Linux for ARM 64 9

SRPM
thunderbird-153.6.0-1.el9_8.src.rpm SHA-256: f2453673661f4d42203322c18bed2b7a2ef6a7d46daa3447b37e152e908261f0
aarch64
thunderbird-153.6.0-1.el9_8.aarch64.rpm SHA-256: a2f9578248ba1cefa541f08b2ab84e38d2bee4323d6547acf87fa262311d53ba
thunderbird-debuginfo-153.6.0-1.el9_8.aarch64.rpm SHA-256: da145cfbb09778b058aa2c648df1a116cb1273e90dd3ff49ae599ae6b6457055
thunderbird-debugsource-153.6.0-1.el9_8.aarch64.rpm SHA-256: a923b166dc5e0f58e2d22d692e5524e7480bc6dc7e0ffa25cfd40e4d5b3cc83c

Red Hat Enterprise Linux for ARM 64 - Extended Update Support 9.8

SRPM
thunderbird-153.6.0-1.el9_8.src.rpm SHA-256: f2453673661f4d42203322c18bed2b7a2ef6a7d46daa3447b37e152e908261f0
aarch64
thunderbird-153.6.0-1.el9_8.aarch64.rpm SHA-256: a2f9578248ba1cefa541f08b2ab84e38d2bee4323d6547acf87fa262311d53ba
thunderbird-debuginfo-153.6.0-1.el9_8.aarch64.rpm SHA-256: da145cfbb09778b058aa2c648df1a116cb1273e90dd3ff49ae599ae6b6457055
thunderbird-debugsource-153.6.0-1.el9_8.aarch64.rpm SHA-256: a923b166dc5e0f58e2d22d692e5524e7480bc6dc7e0ffa25cfd40e4d5b3cc83c

Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 9.8

SRPM
thunderbird-153.6.0-1.el9_8.src.rpm SHA-256: f2453673661f4d42203322c18bed2b7a2ef6a7d46daa3447b37e152e908261f0
ppc64le
thunderbird-153.6.0-1.el9_8.ppc64le.rpm SHA-256: b4ef9e39a054af9f4ab479dea7493857e53f9311e5fbc38ee83a72b041964b97
thunderbird-debuginfo-153.6.0-1.el9_8.ppc64le.rpm SHA-256: 5f0f4d3feb5e20ee598efb62a26ea3596cc007f6761c153a82328d1dccfd576b
thunderbird-debugsource-153.6.0-1.el9_8.ppc64le.rpm SHA-256: 2d33aa9e3d32fcd4b34a8514efc041b6d81b5bf6672443dfe20a3d46281c0496

Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.8

SRPM
thunderbird-153.6.0-1.el9_8.src.rpm SHA-256: f2453673661f4d42203322c18bed2b7a2ef6a7d46daa3447b37e152e908261f0
x86_64
thunderbird-153.6.0-1.el9_8.x86_64.rpm SHA-256: 5f90621f3f4b926f76098af2814537c2b3cf458d99e8d33c6995627df67fa0f4
thunderbird-debuginfo-153.6.0-1.el9_8.x86_64.rpm SHA-256: aa812c2a48ea2cda970e85573bebae5876c171ed97be5cd1bc117e2f89b2a6c9
thunderbird-debugsource-153.6.0-1.el9_8.x86_64.rpm SHA-256: b3742eee719f082f6c0f3b1a955f192d7e3d0dd6d325b1f254903253b9f8e81c

Red Hat Enterprise Linux for ARM 64 - 4 years of updates 9.8

SRPM
thunderbird-153.6.0-1.el9_8.src.rpm SHA-256: f2453673661f4d42203322c18bed2b7a2ef6a7d46daa3447b37e152e908261f0
aarch64
thunderbird-153.6.0-1.el9_8.aarch64.rpm SHA-256: a2f9578248ba1cefa541f08b2ab84e38d2bee4323d6547acf87fa262311d53ba
thunderbird-debuginfo-153.6.0-1.el9_8.aarch64.rpm SHA-256: da145cfbb09778b058aa2c648df1a116cb1273e90dd3ff49ae599ae6b6457055
thunderbird-debugsource-153.6.0-1.el9_8.aarch64.rpm SHA-256: a923b166dc5e0f58e2d22d692e5524e7480bc6dc7e0ffa25cfd40e4d5b3cc83c

Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 9.8

SRPM
thunderbird-153.6.0-1.el9_8.src.rpm SHA-256: f2453673661f4d42203322c18bed2b7a2ef6a7d46daa3447b37e152e908261f0
s390x
thunderbird-153.6.0-1.el9_8.s390x.rpm SHA-256: 1beb8af1313ad65d3a5af39782d50c71a4cf8c0df85bb9760261020871d2b7d4
thunderbird-debuginfo-153.6.0-1.el9_8.s390x.rpm SHA-256: 6285ecb7f8f9651eab6b1c7f2c0f400ca58a20a19dc8f4d424d2c45ad23c400a
thunderbird-debugsource-153.6.0-1.el9_8.s390x.rpm SHA-256: cfb324a34a5c9f0f77280b0e147c3e94b73553b29a64af5c20307a2cebc261d5

Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 9.8

SRPM
thunderbird-153.6.0-1.el9_8.src.rpm SHA-256: f2453673661f4d42203322c18bed2b7a2ef6a7d46daa3447b37e152e908261f0
x86_64
thunderbird-153.6.0-1.el9_8.x86_64.rpm SHA-256: 5f90621f3f4b926f76098af2814537c2b3cf458d99e8d33c6995627df67fa0f4
thunderbird-debuginfo-153.6.0-1.el9_8.x86_64.rpm SHA-256: aa812c2a48ea2cda970e85573bebae5876c171ed97be5cd1bc117e2f89b2a6c9
thunderbird-debugsource-153.6.0-1.el9_8.x86_64.rpm SHA-256: b3742eee719f082f6c0f3b1a955f192d7e3d0dd6d325b1f254903253b9f8e81c

Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle 9.8

SRPM
thunderbird-153.6.0-1.el9_8.src.rpm SHA-256: f2453673661f4d42203322c18bed2b7a2ef6a7d46daa3447b37e152e908261f0
aarch64
thunderbird-153.6.0-1.el9_8.aarch64.rpm SHA-256: a2f9578248ba1cefa541f08b2ab84e38d2bee4323d6547acf87fa262311d53ba
thunderbird-debuginfo-153.6.0-1.el9_8.aarch64.rpm SHA-256: da145cfbb09778b058aa2c648df1a116cb1273e90dd3ff49ae599ae6b6457055
thunderbird-debugsource-153.6.0-1.el9_8.aarch64.rpm SHA-256: a923b166dc5e0f58e2d22d692e5524e7480bc6dc7e0ffa25cfd40e4d5b3cc83c

Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle 9.8

SRPM
thunderbird-153.6.0-1.el9_8.src.rpm SHA-256: f2453673661f4d42203322c18bed2b7a2ef6a7d46daa3447b37e152e908261f0
ppc64le
thunderbird-153.6.0-1.el9_8.ppc64le.rpm SHA-256: b4ef9e39a054af9f4ab479dea7493857e53f9311e5fbc38ee83a72b041964b97
thunderbird-debuginfo-153.6.0-1.el9_8.ppc64le.rpm SHA-256: 5f0f4d3feb5e20ee598efb62a26ea3596cc007f6761c153a82328d1dccfd576b
thunderbird-debugsource-153.6.0-1.el9_8.ppc64le.rpm SHA-256: 2d33aa9e3d32fcd4b34a8514efc041b6d81b5bf6672443dfe20a3d46281c0496

Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle 9.8

SRPM
thunderbird-153.6.0-1.el9_8.src.rpm SHA-256: f2453673661f4d42203322c18bed2b7a2ef6a7d46daa3447b37e152e908261f0
s390x
thunderbird-153.6.0-1.el9_8.s390x.rpm SHA-256: 1beb8af1313ad65d3a5af39782d50c71a4cf8c0df85bb9760261020871d2b7d4
thunderbird-debuginfo-153.6.0-1.el9_8.s390x.rpm SHA-256: 6285ecb7f8f9651eab6b1c7f2c0f400ca58a20a19dc8f4d424d2c45ad23c400a
thunderbird-debugsource-153.6.0-1.el9_8.s390x.rpm SHA-256: cfb324a34a5c9f0f77280b0e147c3e94b73553b29a64af5c20307a2cebc261d5

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

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