libapache2-mod-auth-openidc: mod_auth_openidc is an OpenID Certified authentication and authorization module for the Apache 2.x HTTP server that i...
CVE-2026-54789 is fixed in 7 products on 1 platform, first by RHSA-2026:69719, released August 21, 2026. It is not reported as exploited. Patch Radar priority: High.
mod_auth_openidc is an OpenID Certified authentication and authorization module for the Apache 2.x HTTP server that implements the OpenID Connect Relying Party functionality. Prior to 2.4.19.4, an out-of-bounds read and a one-byte out-of-bounds write exist in the state-cookie parser of `mod_auth_openidc`. The issue is fixed in version 2.4.19.4 by stopping the scan at the string terminator so a value-less token is rejected. No in-product workarounds are available. As a stop-gap, an upstream reverse proxy or WAF that rejects or normalizes malformed `Cookie` headers (tokens lacking `=`) can reduce exposure, but upgrading is the recommended remediation.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| apache2-mod_auth_openidc · opensuse-leap 16.0 | 2.4.17.1-160000.2.1 | OPENSUSE-SU-2026:21717-1 | Sep 1, 2026 |
| apache2-mod_auth_openidc · sles 15.6 | 2.4.17.1-150600.16.20.1 | SUSE-SU-2026:3952-1 | Sep 3, 2026 |
| apache2-mod_auth_openidc · sles 15.7 | 2.4.17.1-150600.16.20.1 | SUSE-SU-2026:3952-1 | Sep 3, 2026 |
| apache2-mod_auth_openidc · sles 16.0 | 2.4.17.1-160000.2.1 | SUSE-SU-2026:23593-1 | Sep 1, 2026 |
| cjose · RHEL 8 | 0:0.6.1-5.module+el8.10.0+24880+4db9166e | RHSA-2026:77369 | Oct 8, 2026 |
| cjose · almalinux 8 | 0.6.1-5.module_el8.10.0+4297+63ae3533 | ALSA-2026:77369 | Oct 7, 2026 |
| cjose · ol 8 | 0:0.6.1-5.module+el8.10.0+91060+e975931f | ELSA-2026-77369 | Nov 7, 2026 |
| cjose · rocky 8 | 0:0.6.1-5.module+el8.10.0+40373+8a3f15d2 | RLSA-2026:77369 | Nov 7, 2026 |
| cjose-devel · RHEL 8 | 0:0.6.1-5.module+el8.10.0+24880+4db9166e | RHSA-2026:77369 | Oct 8, 2026 |
| cjose-devel · almalinux 8 | 0.6.1-5.module_el8.10.0+4297+63ae3533 | ALSA-2026:77369 | Oct 7, 2026 |
| cjose-devel · ol 8 | 0:0.6.1-5.module+el8.10.0+91060+e975931f | ELSA-2026-77369 | Nov 7, 2026 |
| libapache2-mod-auth-openidc · Debian 12.15 (bookworm) | 2.4.12.3-2+deb12u5 | DEBIAN-CVE-2026-54789 | Aug 21, 2026 |
| libapache2-mod-auth-openidc · Debian 13.5 (trixie) | 2.4.17-1+deb13u1 | DEBIAN-CVE-2026-54789 | Aug 21, 2026 |
| libapache2-mod-auth-openidc · Debian 14 | 2.4.19.4-1 | DEBIAN-CVE-2026-54789 | Aug 21, 2026 |
| mod_auth_openidc · RHEL 10 | 2.4.15-4.el10_0.2 | RHSA-2026:69719 | Aug 21, 2026 |
| mod_auth_openidc · RHEL 8 | 0:2.4.9.4-9.module+el8.10.0+24880+4db9166e | RHSA-2026:77369 | Oct 8, 2026 |
| mod_auth_openidc · RHEL 9 | 0:2.4.16.11-1.el9_8.1 | RHSA-2026:79177 | Oct 9, 2026 |
| mod_auth_openidc · almalinux 10 | 2.4.16.11-1.el10_2.1 | ALSA-2026:75581 | Oct 5, 2026 |
| mod_auth_openidc · almalinux 8 | 2.4.9.4-9.module_el8.10.0+4297+63ae3533 | ALSA-2026:77369 | Oct 7, 2026 |
| mod_auth_openidc · almalinux 9 | 2.4.16.11-1.el9_8.1 | ALSA-2026:79177 | Oct 8, 2026 |
| mod_auth_openidc · amzn 2023 | 2.4.16.11-1.amzn2023.0.2 | ALAS2023-2026-2155 | Sep 14, 2026 |
| mod_auth_openidc · ol 10 | 0:2.4.16.11-1.el10_2.1 | ELSA-2026-75581 | Oct 5, 2026 |
| mod_auth_openidc · ol 8 | 0:2.4.9.4-9.module+el8.10.0+91060+e975931f | ELSA-2026-77369 | Nov 7, 2026 |
| mod_auth_openidc · ol 9 | 0:2.4.16.11-1.el9_8.1 | ELSA-2026-79177 | Nov 7, 2026 |
| mod_auth_openidc · rocky 10 | 0:2.4.16.11-1.el10_2.1 | RLSA-2026:75581 | Oct 6, 2026 |
| mod_auth_openidc · rocky 8 | 0:2.4.9.4-9.module+el8.10.0+40373+8a3f15d2 | RLSA-2026:77369 | Nov 7, 2026 |
| mod_auth_openidc · rocky 9 | 0:2.4.16.11-1.el9_8.1 | RLSA-2026:79177 | Nov 7, 2026 |
| mod_auth_openidc-debuginfo · amzn 2023 | 2.4.16.11-1.amzn2023.0.2 | ALAS2023-2026-2155 | Sep 14, 2026 |
| mod_auth_openidc-debugsource · amzn 2023 | 2.4.16.11-1.amzn2023.0.2 | ALAS2023-2026-2155 | Sep 14, 2026 |
Patch Radar data is free to use with attribution. Terms and how to credit it.
Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.