RHSA-2026:21517HighCVSS 7.5

Red Hat Security Advisory: fence-agents security update

Published
May 28, 2026
Last Modified
October 14, 2026

🔗 CVE IDs covered (2)

CVE-2026-26007 →CVE-2026-32597 →

📋 Description

CVE-2026-26007 — cryptography: cryptography Subgroup Attack Due to Missing Subgroup Validation for SECT Curves CVE-2026-32597 — pyjwt: PyJWT accepts unknown crit header extensions (RFC 7515 §4.1.11 MUST violation)

🎯 Affected products192

  • Red Hat Enterprise Linux AppStream EUS (v.9.4)
  • Red Hat Enterprise Linux High Availability EUS (v.9.4)
  • Red Hat Enterprise Linux Resilient Storage EUS (v.9.4)
  • fence-agents-0:4.10.0-62.el9_4.24.src as a component of Red Hat Enterprise Linux AppStream EUS (v.9.4)
  • fence-agents-aliyun-0:4.10.0-62.el9_4.24.x86_64 as a component of Red Hat Enterprise Linux High Availability EUS (v.9.4)
  • fence-agents-aliyun-0:4.10.0-62.el9_4.24.x86_64 as a component of Red Hat Enterprise Linux Resilient Storage EUS (v.9.4)
  • fence-agents-all-0:4.10.0-62.el9_4.24.aarch64 as a component of Red Hat Enterprise Linux High Availability EUS (v.9.4)
  • fence-agents-all-0:4.10.0-62.el9_4.24.ppc64le as a component of Red Hat Enterprise Linux High Availability EUS (v.9.4)
  • fence-agents-all-0:4.10.0-62.el9_4.24.ppc64le as a component of Red Hat Enterprise Linux Resilient Storage EUS (v.9.4)
  • fence-agents-all-0:4.10.0-62.el9_4.24.s390x as a component of Red Hat Enterprise Linux High Availability EUS (v.9.4)
  • fence-agents-all-0:4.10.0-62.el9_4.24.s390x as a component of Red Hat Enterprise Linux Resilient Storage EUS (v.9.4)
  • fence-agents-all-0:4.10.0-62.el9_4.24.x86_64 as a component of Red Hat Enterprise Linux High Availability EUS (v.9.4)
  • fence-agents-all-0:4.10.0-62.el9_4.24.x86_64 as a component of Red Hat Enterprise Linux Resilient Storage EUS (v.9.4)
  • fence-agents-amt-ws-0:4.10.0-62.el9_4.24.noarch as a component of Red Hat Enterprise Linux High Availability EUS (v.9.4)
  • fence-agents-amt-ws-0:4.10.0-62.el9_4.24.noarch as a component of Red Hat Enterprise Linux Resilient Storage EUS (v.9.4)
  • fence-agents-apc-0:4.10.0-62.el9_4.24.noarch as a component of Red Hat Enterprise Linux High Availability EUS (v.9.4)
  • fence-agents-apc-0:4.10.0-62.el9_4.24.noarch as a component of Red Hat Enterprise Linux Resilient Storage EUS (v.9.4)
  • fence-agents-apc-snmp-0:4.10.0-62.el9_4.24.noarch as a component of Red Hat Enterprise Linux High Availability EUS (v.9.4)
  • fence-agents-apc-snmp-0:4.10.0-62.el9_4.24.noarch as a component of Red Hat Enterprise Linux Resilient Storage EUS (v.9.4)
  • fence-agents-aws-0:4.10.0-62.el9_4.24.x86_64 as a component of Red Hat Enterprise Linux High Availability EUS (v.9.4)
  • fence-agents-aws-0:4.10.0-62.el9_4.24.x86_64 as a component of Red Hat Enterprise Linux Resilient Storage EUS (v.9.4)
  • fence-agents-azure-arm-0:4.10.0-62.el9_4.24.x86_64 as a component of Red Hat Enterprise Linux High Availability EUS (v.9.4)
  • fence-agents-azure-arm-0:4.10.0-62.el9_4.24.x86_64 as a component of Red Hat Enterprise Linux Resilient Storage EUS (v.9.4)
  • fence-agents-bladecenter-0:4.10.0-62.el9_4.24.noarch as a component of Red Hat Enterprise Linux High Availability EUS (v.9.4)
  • fence-agents-bladecenter-0:4.10.0-62.el9_4.24.noarch as a component of Red Hat Enterprise Linux Resilient Storage EUS (v.9.4)
  • fence-agents-brocade-0:4.10.0-62.el9_4.24.noarch as a component of Red Hat Enterprise Linux High Availability EUS (v.9.4)
  • fence-agents-brocade-0:4.10.0-62.el9_4.24.noarch as a component of Red Hat Enterprise Linux Resilient Storage EUS (v.9.4)
  • fence-agents-cisco-mds-0:4.10.0-62.el9_4.24.noarch as a component of Red Hat Enterprise Linux High Availability EUS (v.9.4)
  • fence-agents-cisco-mds-0:4.10.0-62.el9_4.24.noarch as a component of Red Hat Enterprise Linux Resilient Storage EUS (v.9.4)
  • fence-agents-cisco-ucs-0:4.10.0-62.el9_4.24.noarch as a component of Red Hat Enterprise Linux High Availability EUS (v.9.4)
  • +162 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: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

🔗 References (5)