Red Hat Security Advisory: fence-agents security update
The fence-agents packages provide a collection of scripts for handling remote power management for cluster devices. They allow failed or unreachable nodes to be forcibly restarted and removed from the cluster. Security Fix(es): * pyjwt: PyJWT accepts unknown `crit` header extensions (RFC 7515 ?4.1.11 MUST violation) (CVE-2026-32597) * pyasn1: pyasn1 Vulnerable to Denial of Service via Unbounded Recursion (CVE-2026-30922) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
AI Analysis
Technical Summary
The fence-agents package in Red Hat Enterprise Linux 10 contains two security issues. CVE-2026-32597 concerns PyJWT accepting unknown 'crit' header extensions, violating RFC 7515 section 4.1.11, which mandates strict handling of critical header parameters. CVE-2026-30922 involves the pyasn1 library being vulnerable to denial of service attacks caused by unbounded recursion. These vulnerabilities could impact cluster node management by potentially allowing malformed inputs to disrupt operations. Red Hat has released updated fence-agents packages addressing these issues for multiple architectures and variants of Red Hat Enterprise Linux 10.
Potential Impact
The vulnerabilities affect the fence-agents package used for remote power management in clusters, potentially allowing denial of service conditions or improper handling of JWT tokens due to protocol violations. This could disrupt cluster node management by causing failures in forcibly restarting or removing nodes. The security impact is rated as Important by Red Hat, indicating a high severity but not critical. There are no known exploits in the wild at this time.
Mitigation Recommendations
Red Hat has released updated fence-agents packages for Red Hat Enterprise Linux 10 and its variants that address these vulnerabilities. Users should apply the security update as detailed in Red Hat advisory RHSA-2026:13916 and the referenced article https://access.redhat.com/articles/11258. No additional mitigations are specified or required beyond applying the official update.
Red Hat Security Advisory: fence-agents security update
Description
The fence-agents packages provide a collection of scripts for handling remote power management for cluster devices. They allow failed or unreachable nodes to be forcibly restarted and removed from the cluster. Security Fix(es): * pyjwt: PyJWT accepts unknown `crit` header extensions (RFC 7515 ?4.1.11 MUST violation) (CVE-2026-32597) * pyasn1: pyasn1 Vulnerable to Denial of Service via Unbounded Recursion (CVE-2026-30922) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The fence-agents package in Red Hat Enterprise Linux 10 contains two security issues. CVE-2026-32597 concerns PyJWT accepting unknown 'crit' header extensions, violating RFC 7515 section 4.1.11, which mandates strict handling of critical header parameters. CVE-2026-30922 involves the pyasn1 library being vulnerable to denial of service attacks caused by unbounded recursion. These vulnerabilities could impact cluster node management by potentially allowing malformed inputs to disrupt operations. Red Hat has released updated fence-agents packages addressing these issues for multiple architectures and variants of Red Hat Enterprise Linux 10.
Potential Impact
The vulnerabilities affect the fence-agents package used for remote power management in clusters, potentially allowing denial of service conditions or improper handling of JWT tokens due to protocol violations. This could disrupt cluster node management by causing failures in forcibly restarting or removing nodes. The security impact is rated as Important by Red Hat, indicating a high severity but not critical. There are no known exploits in the wild at this time.
Mitigation Recommendations
Red Hat has released updated fence-agents packages for Red Hat Enterprise Linux 10 and its variants that address these vulnerabilities. Users should apply the security update as detailed in Red Hat advisory RHSA-2026:13916 and the referenced article https://access.redhat.com/articles/11258. No additional mitigations are specified or required beyond applying the official update.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:13916
- Cve Count
- 2
- Additional Cves
- ["CVE-2026-32597"]
Threat ID: 6a16097fe29bf47b5064b7c6
Added to database: 05/26/2026, 20:58:39 UTC
Last enriched: 08/12/2026, 19:48:26 UTC
Last updated: 09/14/2026, 10:01:30 UTC
Views: 110
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.