RHSA-2026:89836 - Security Advisory

Topic

An update for the idm:DL1 module is now available for Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On.

Red Hat Product Security has rated this update as having a security impact of Critical. 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

Red Hat Identity Management (IdM) is a centralized authentication, identity management, and authorization solution for both traditional and cloud-based enterprise environments.

Security Fix(es):

• ipa: FreeIPA: Unauthenticated DoS in `/ipa/i18n_messages` via Unbounded Request Body Read (CVE-2026-73198)
• ipa: FreeIPA: Unauthenticated DoS in `/ipa/migration/migration.py` via Unbounded Request Body Read (CVE-2026-73197)
• FreeIPA: idm: ipa: FreeIPA: Obtaining TGS with impersonating cname through trust relationships (CVE-2026-11861)
• freeipa: ipa: FreeIPA/IdM: Cross-Site Scripting vulnerability allows arbitrary code execution via crafted URL (CVE-2026-18147)
• freeipa: ipa: FreeIPA: trust-fetch-domains uses trust-read ACI to gate a privileged AD trust refresh, allowing unauthorized LDAP writes (CVE-2026-19550)
• ipa: Privilege escalation via krbCanonicalName manipulation due to realm-unaware uniqueness enforcement in FreeIPA LDAP datastore (CVE-2026-13097)
• ipa: freeipa: FreeIPA: unauthenticated LDAP client can obtain administrator credentials via the self-managed-token ACI (CVE-2026-76578)
• freeIPA: idm: freeipa: idp-add eval() reachable before authorization check allows environment disclosure and denial of service (CVE-2026-79678)

Bug Fix(es) and Enhancement(s):

• Fix ipatests for kdcproxy after CVE-2025-59088 fix (JIRA:RHEL-129969)

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 - Extended Life Cycle Long Life 8.6 x86_64
• Red Hat Enterprise Linux Server - AUS 8.6 x86_64

Fixes

• BZ - 2472960 - CVE-2026-73198 ipa: FreeIPA: Unauthenticated DoS in `/ipa/i18n_messages` via Unbounded Request Body Read
• BZ - 2474697 - CVE-2026-73197 ipa: FreeIPA: Unauthenticated DoS in `/ipa/migration/migration.py` via Unbounded Request Body Read
• BZ - 2487472 - CVE-2026-11861 FreeIPA: idm: ipa: FreeIPA: Obtaining TGS with impersonating cname through trust relationships
• BZ - 2508181 - CVE-2026-18147 freeipa: ipa: FreeIPA/IdM: Cross-Site Scripting vulnerability allows arbitrary code execution via crafted URL
• BZ - 2514019 - CVE-2026-19550 freeipa: ipa: FreeIPA: trust-fetch-domains uses trust-read ACI to gate a privileged AD trust refresh, allowing unauthorized LDAP writes
• BZ - 2515974 - CVE-2026-13097 ipa: Privilege escalation via krbCanonicalName manipulation due to realm-unaware uniqueness enforcement in FreeIPA LDAP datastore
• BZ - 2519522 - CVE-2026-76578 ipa: freeipa: FreeIPA: unauthenticated LDAP client can obtain administrator credentials via the self-managed-token ACI
• BZ - 2523356 - CVE-2026-79678 freeIPA: idm: freeipa: idp-add eval() reachable before authorization check allows environment disclosure and denial of service

CVEs

• CVE-2026-11861
• CVE-2026-13097
• CVE-2026-18147
• CVE-2026-19550
• CVE-2026-73197
• CVE-2026-73198
• CVE-2026-76578
• CVE-2026-79678

References

• https://access.redhat.com/security/updates/classification/#critical