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 packages in Red Hat Enterprise Linux 10 provide scripts for remote power management in clusters. Two security issues are fixed: CVE-2026-30922 is a denial of service vulnerability in the pyasn1 library caused by unbounded recursion, and CVE-2026-32597 involves PyJWT accepting unknown critical header extensions, violating RFC 7515 section 4.1.11. These vulnerabilities could impact cluster node management. The Red Hat advisory RHSA-2026:19138 provides the update details and rates the security impact as Important.
Potential Impact
The denial of service vulnerability (CVE-2026-30922) in pyasn1 could allow an attacker to cause unbounded recursion, potentially leading to service disruption of cluster node management. The PyJWT vulnerability (CVE-2026-32597) involves acceptance of unknown critical header extensions, which violates RFC 7515 and could affect the security validation of JSON Web Tokens used in the environment. Both issues affect the reliability and security of cluster node fencing operations.
Mitigation Recommendations
Red Hat has released an updated fence-agents package for Red Hat Enterprise Linux 10 that addresses these vulnerabilities. Users should apply the update as described in the Red Hat advisory RHSA-2026:19138 and the referenced article https://access.redhat.com/articles/11258. No additional mitigation steps are indicated 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 packages in Red Hat Enterprise Linux 10 provide scripts for remote power management in clusters. Two security issues are fixed: CVE-2026-30922 is a denial of service vulnerability in the pyasn1 library caused by unbounded recursion, and CVE-2026-32597 involves PyJWT accepting unknown critical header extensions, violating RFC 7515 section 4.1.11. These vulnerabilities could impact cluster node management. The Red Hat advisory RHSA-2026:19138 provides the update details and rates the security impact as Important.
Potential Impact
The denial of service vulnerability (CVE-2026-30922) in pyasn1 could allow an attacker to cause unbounded recursion, potentially leading to service disruption of cluster node management. The PyJWT vulnerability (CVE-2026-32597) involves acceptance of unknown critical header extensions, which violates RFC 7515 and could affect the security validation of JSON Web Tokens used in the environment. Both issues affect the reliability and security of cluster node fencing operations.
Mitigation Recommendations
Red Hat has released an updated fence-agents package for Red Hat Enterprise Linux 10 that addresses these vulnerabilities. Users should apply the update as described in the Red Hat advisory RHSA-2026:19138 and the referenced article https://access.redhat.com/articles/11258. No additional mitigation steps are indicated 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-2026:19138
- Cve Count
- 2
- Additional Cves
- ["CVE-2026-32597"]
Threat ID: 6a16097ee29bf47b5064b00d
Added to database: 05/26/2026, 20:58:38 UTC
Last enriched: 08/12/2026, 19:44:46 UTC
Last updated: 09/14/2026, 22:01:33 UTC
Views: 110
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