RHSA-2026:77371HighCVSS 8.2

Red Hat Security Advisory: mod_auth_openidc:2.3 security update

Published
October 7, 2026
Last Modified
October 7, 2026

🔗 CVE IDs covered (1)

CVE-2026-53938 →

📋 Description

CVE-2026-53938 — cjose: cjose: Heap buffer overflow in AES Key Wrap decryption leads to denial of service

🎯 Affected products41

  • Red Hat Enterprise Linux AppStream AUS (v.8.6)
  • Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)
  • cjose-0:0.6.1-3.module+el8.6.0+24971+334c209b.1.aarch64 (mod_auth_openidc:2.3) as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)
  • cjose-0:0.6.1-3.module+el8.6.0+24971+334c209b.1.ppc64le (mod_auth_openidc:2.3) as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)
  • cjose-0:0.6.1-3.module+el8.6.0+24971+334c209b.1.s390x (mod_auth_openidc:2.3) as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)
  • cjose-0:0.6.1-3.module+el8.6.0+24971+334c209b.1.src (mod_auth_openidc:2.3) as a component of Red Hat Enterprise Linux AppStream AUS (v.8.6)
  • cjose-0:0.6.1-3.module+el8.6.0+24971+334c209b.1.src (mod_auth_openidc:2.3) as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)
  • cjose-0:0.6.1-3.module+el8.6.0+24971+334c209b.1.x86_64 (mod_auth_openidc:2.3) as a component of Red Hat Enterprise Linux AppStream AUS (v.8.6)
  • cjose-0:0.6.1-3.module+el8.6.0+24971+334c209b.1.x86_64 (mod_auth_openidc:2.3) as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)
  • cjose-debuginfo-0:0.6.1-3.module+el8.6.0+24971+334c209b.1.aarch64 (mod_auth_openidc:2.3) as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)
  • cjose-debuginfo-0:0.6.1-3.module+el8.6.0+24971+334c209b.1.ppc64le (mod_auth_openidc:2.3) as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)
  • cjose-debuginfo-0:0.6.1-3.module+el8.6.0+24971+334c209b.1.s390x (mod_auth_openidc:2.3) as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)
  • cjose-debuginfo-0:0.6.1-3.module+el8.6.0+24971+334c209b.1.x86_64 (mod_auth_openidc:2.3) as a component of Red Hat Enterprise Linux AppStream AUS (v.8.6)
  • cjose-debuginfo-0:0.6.1-3.module+el8.6.0+24971+334c209b.1.x86_64 (mod_auth_openidc:2.3) as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)
  • cjose-debugsource-0:0.6.1-3.module+el8.6.0+24971+334c209b.1.aarch64 (mod_auth_openidc:2.3) as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)
  • cjose-debugsource-0:0.6.1-3.module+el8.6.0+24971+334c209b.1.ppc64le (mod_auth_openidc:2.3) as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)
  • cjose-debugsource-0:0.6.1-3.module+el8.6.0+24971+334c209b.1.s390x (mod_auth_openidc:2.3) as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)
  • cjose-debugsource-0:0.6.1-3.module+el8.6.0+24971+334c209b.1.x86_64 (mod_auth_openidc:2.3) as a component of Red Hat Enterprise Linux AppStream AUS (v.8.6)
  • cjose-debugsource-0:0.6.1-3.module+el8.6.0+24971+334c209b.1.x86_64 (mod_auth_openidc:2.3) as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)
  • cjose-devel-0:0.6.1-3.module+el8.6.0+24971+334c209b.1.aarch64 (mod_auth_openidc:2.3) as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)
  • cjose-devel-0:0.6.1-3.module+el8.6.0+24971+334c209b.1.ppc64le (mod_auth_openidc:2.3) as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)
  • cjose-devel-0:0.6.1-3.module+el8.6.0+24971+334c209b.1.s390x (mod_auth_openidc:2.3) as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)
  • cjose-devel-0:0.6.1-3.module+el8.6.0+24971+334c209b.1.x86_64 (mod_auth_openidc:2.3) as a component of Red Hat Enterprise Linux AppStream AUS (v.8.6)
  • cjose-devel-0:0.6.1-3.module+el8.6.0+24971+334c209b.1.x86_64 (mod_auth_openidc:2.3) as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)
  • mod_auth_openidc-0:2.4.9.4-1.module+el8.6.0+24867+df0294a5.3.aarch64 (mod_auth_openidc:2.3) as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)
  • mod_auth_openidc-0:2.4.9.4-1.module+el8.6.0+24867+df0294a5.3.ppc64le (mod_auth_openidc:2.3) as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)
  • mod_auth_openidc-0:2.4.9.4-1.module+el8.6.0+24867+df0294a5.3.s390x (mod_auth_openidc:2.3) as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)
  • mod_auth_openidc-0:2.4.9.4-1.module+el8.6.0+24867+df0294a5.3.src (mod_auth_openidc:2.3) as a component of Red Hat Enterprise Linux AppStream AUS (v.8.6)
  • mod_auth_openidc-0:2.4.9.4-1.module+el8.6.0+24867+df0294a5.3.src (mod_auth_openidc:2.3) as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)
  • mod_auth_openidc-0:2.4.9.4-1.module+el8.6.0+24867+df0294a5.3.x86_64 (mod_auth_openidc:2.3) as a component of Red Hat Enterprise Linux AppStream AUS (v.8.6)
  • +11 more not shown

✅ Remediation

For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Workaround: Applications using `cjose` should be configured to reject JWEs that specify the AES Key Wrap key-management algorithms (`A128KW`, `A192KW`, `A256KW`) when processing untrusted input. This application-layer rejection prevents the vulnerable decryption path from being exercised.

🔗 References (4)