SUSE-SU-2026:3915-1: important: Security update for apache2-mod_auth_openidc

[SLE-SECURITY-UPDATES]

# Security update for apache2-mod_auth_openidc

Announcement ID: SUSE-SU-2026:3915-1  
Release Date: 2026-09-01T14:57:09Z  
Rating: important  
References:

  * bsc#1276217

  
Cross-References:

  * CVE-2026-54789

  
CVSS scores:

  * CVE-2026-54789 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-54789 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

  
Affected Products:

  * SUSE Linux Enterprise High Performance Computing 12 SP5
  * SUSE Linux Enterprise Server 12 SP5
  * SUSE Linux Enterprise Server 12 SP5 LTSS
  * SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security
  * SUSE Linux Enterprise Server for SAP Applications 12 SP5

  
  
An update that solves one vulnerability can now be installed.

## Description:

This update for apache2-mod_auth_openidc fixes the following issue:

  * CVE-2026-54789: out-of-bounds read and one-byte out-of-bounds write in the
    state-cookie parser of `mod_auth_openidc` (bsc#1276217).

## Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like
YaST online_update or "zypper patch".  
Alternatively you can run the command listed for your product:

  * SUSE Linux Enterprise Server 12 SP5 LTSS  
    zypper in -t patch SUSE-SLE-SERVER-12-SP5-LTSS-2026-3915=1

  * SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security  
    zypper in -t patch SUSE-SLE-SERVER-12-SP5-LTSS-EXTENDED-SECURITY-2026-3915=1

## Package List:

  * SUSE Linux Enterprise Server 12 SP5 LTSS (aarch64 ppc64le s390x x86_64)
    * apache2-mod_auth_openidc-debuginfo-2.4.0-7.25.1
    * apache2-mod_auth_openidc-2.4.0-7.25.1
    * apache2-mod_auth_openidc-debugsource-2.4.0-7.25.1
  * SUSE Linux Enterprise Server 12 SP5 LTSS Extended Security (x86_64)
    * apache2-mod_auth_openidc-2.4.0-7.25.1
    * apache2-mod_auth_openidc-debuginfo-2.4.0-7.25.1
    * apache2-mod_auth_openidc-debugsource-2.4.0-7.25.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-54789.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1276217

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