RHSA-2026:77370HighCVSS 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 products27

  • Red Hat Enterprise Linux AppStream E4S (v.8.8)
  • Red Hat Enterprise Linux AppStream TUS (v.8.8)
  • cjose-0:0.6.1-3.module+el8.8.0+24970+620d53ef.1.ppc64le (mod_auth_openidc:2.3) as a component of Red Hat Enterprise Linux AppStream E4S (v.8.8)
  • cjose-0:0.6.1-3.module+el8.8.0+24970+620d53ef.1.src (mod_auth_openidc:2.3) as a component of Red Hat Enterprise Linux AppStream E4S (v.8.8)
  • cjose-0:0.6.1-3.module+el8.8.0+24970+620d53ef.1.src (mod_auth_openidc:2.3) as a component of Red Hat Enterprise Linux AppStream TUS (v.8.8)
  • cjose-0:0.6.1-3.module+el8.8.0+24970+620d53ef.1.x86_64 (mod_auth_openidc:2.3) as a component of Red Hat Enterprise Linux AppStream E4S (v.8.8)
  • cjose-0:0.6.1-3.module+el8.8.0+24970+620d53ef.1.x86_64 (mod_auth_openidc:2.3) as a component of Red Hat Enterprise Linux AppStream TUS (v.8.8)
  • cjose-debuginfo-0:0.6.1-3.module+el8.8.0+24970+620d53ef.1.ppc64le (mod_auth_openidc:2.3) as a component of Red Hat Enterprise Linux AppStream E4S (v.8.8)
  • cjose-debuginfo-0:0.6.1-3.module+el8.8.0+24970+620d53ef.1.x86_64 (mod_auth_openidc:2.3) as a component of Red Hat Enterprise Linux AppStream E4S (v.8.8)
  • cjose-debuginfo-0:0.6.1-3.module+el8.8.0+24970+620d53ef.1.x86_64 (mod_auth_openidc:2.3) as a component of Red Hat Enterprise Linux AppStream TUS (v.8.8)
  • cjose-debugsource-0:0.6.1-3.module+el8.8.0+24970+620d53ef.1.ppc64le (mod_auth_openidc:2.3) as a component of Red Hat Enterprise Linux AppStream E4S (v.8.8)
  • cjose-debugsource-0:0.6.1-3.module+el8.8.0+24970+620d53ef.1.x86_64 (mod_auth_openidc:2.3) as a component of Red Hat Enterprise Linux AppStream E4S (v.8.8)
  • cjose-debugsource-0:0.6.1-3.module+el8.8.0+24970+620d53ef.1.x86_64 (mod_auth_openidc:2.3) as a component of Red Hat Enterprise Linux AppStream TUS (v.8.8)
  • cjose-devel-0:0.6.1-3.module+el8.8.0+24970+620d53ef.1.ppc64le (mod_auth_openidc:2.3) as a component of Red Hat Enterprise Linux AppStream E4S (v.8.8)
  • cjose-devel-0:0.6.1-3.module+el8.8.0+24970+620d53ef.1.x86_64 (mod_auth_openidc:2.3) as a component of Red Hat Enterprise Linux AppStream E4S (v.8.8)
  • cjose-devel-0:0.6.1-3.module+el8.8.0+24970+620d53ef.1.x86_64 (mod_auth_openidc:2.3) as a component of Red Hat Enterprise Linux AppStream TUS (v.8.8)
  • mod_auth_openidc-0:2.4.9.4-1.module+el8.8.0+24885+7d8e9f68.3.ppc64le (mod_auth_openidc:2.3) as a component of Red Hat Enterprise Linux AppStream E4S (v.8.8)
  • mod_auth_openidc-0:2.4.9.4-1.module+el8.8.0+24885+7d8e9f68.3.src (mod_auth_openidc:2.3) as a component of Red Hat Enterprise Linux AppStream E4S (v.8.8)
  • mod_auth_openidc-0:2.4.9.4-1.module+el8.8.0+24885+7d8e9f68.3.src (mod_auth_openidc:2.3) as a component of Red Hat Enterprise Linux AppStream TUS (v.8.8)
  • mod_auth_openidc-0:2.4.9.4-1.module+el8.8.0+24885+7d8e9f68.3.x86_64 (mod_auth_openidc:2.3) as a component of Red Hat Enterprise Linux AppStream E4S (v.8.8)
  • mod_auth_openidc-0:2.4.9.4-1.module+el8.8.0+24885+7d8e9f68.3.x86_64 (mod_auth_openidc:2.3) as a component of Red Hat Enterprise Linux AppStream TUS (v.8.8)
  • mod_auth_openidc-debuginfo-0:2.4.9.4-1.module+el8.8.0+24885+7d8e9f68.3.ppc64le (mod_auth_openidc:2.3) as a component of Red Hat Enterprise Linux AppStream E4S (v.8.8)
  • mod_auth_openidc-debuginfo-0:2.4.9.4-1.module+el8.8.0+24885+7d8e9f68.3.x86_64 (mod_auth_openidc:2.3) as a component of Red Hat Enterprise Linux AppStream E4S (v.8.8)
  • mod_auth_openidc-debuginfo-0:2.4.9.4-1.module+el8.8.0+24885+7d8e9f68.3.x86_64 (mod_auth_openidc:2.3) as a component of Red Hat Enterprise Linux AppStream TUS (v.8.8)
  • mod_auth_openidc-debugsource-0:2.4.9.4-1.module+el8.8.0+24885+7d8e9f68.3.ppc64le (mod_auth_openidc:2.3) as a component of Red Hat Enterprise Linux AppStream E4S (v.8.8)
  • mod_auth_openidc-debugsource-0:2.4.9.4-1.module+el8.8.0+24885+7d8e9f68.3.x86_64 (mod_auth_openidc:2.3) as a component of Red Hat Enterprise Linux AppStream E4S (v.8.8)
  • mod_auth_openidc-debugsource-0:2.4.9.4-1.module+el8.8.0+24885+7d8e9f68.3.x86_64 (mod_auth_openidc:2.3) as a component of Red Hat Enterprise Linux AppStream TUS (v.8.8)

✅ 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)