Red Hat Security Advisory: fence-agents security update
This security advisory addresses vulnerabilities in the fence-agents packages used in Red Hat Enterprise Linux 10. The fence-agents provide scripts for remote power management in cluster environments, allowing failed or unreachable nodes to be forcibly restarted and removed. The update fixes two vulnerabilities: CVE-2026-32597, where PyJWT accepts unknown critical header extensions violating RFC 7515 requirements, and CVE-2026-30922, a denial of service vulnerability in pyasn1 caused by unbounded recursion. The update is rated as important by Red Hat Product Security.
AI Analysis
Technical Summary
The fence-agents packages in Red Hat Enterprise Linux 10 include scripts for managing remote power control of cluster nodes. Two security issues are addressed in this update: CVE-2026-32597 involves PyJWT improperly accepting unknown `crit` header extensions, violating RFC 7515 section 4.1.11 requirements, potentially leading to security policy bypass. CVE-2026-30922 is a denial of service vulnerability in the pyasn1 library caused by unbounded recursion, which could be triggered by malicious input. Red Hat has released an update for fence-agents to remediate these vulnerabilities.
Potential Impact
The vulnerabilities could allow an attacker to cause denial of service conditions via the pyasn1 unbounded recursion issue or potentially bypass security checks due to PyJWT accepting unknown critical header extensions. These issues affect cluster node management, which could impact cluster stability and security if exploited. No known exploits are reported in the wild at this time.
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 official update as described in Red Hat advisory RHSA-2026:19138. Detailed update instructions are available at https://access.redhat.com/articles/11258. No additional mitigations are indicated by the vendor advisory.
Red Hat Security Advisory: fence-agents security update
Description
This security advisory addresses vulnerabilities in the fence-agents packages used in Red Hat Enterprise Linux 10. The fence-agents provide scripts for remote power management in cluster environments, allowing failed or unreachable nodes to be forcibly restarted and removed. The update fixes two vulnerabilities: CVE-2026-32597, where PyJWT accepts unknown critical header extensions violating RFC 7515 requirements, and CVE-2026-30922, a denial of service vulnerability in pyasn1 caused by unbounded recursion. The update is rated as important by Red Hat Product Security.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The fence-agents packages in Red Hat Enterprise Linux 10 include scripts for managing remote power control of cluster nodes. Two security issues are addressed in this update: CVE-2026-32597 involves PyJWT improperly accepting unknown `crit` header extensions, violating RFC 7515 section 4.1.11 requirements, potentially leading to security policy bypass. CVE-2026-30922 is a denial of service vulnerability in the pyasn1 library caused by unbounded recursion, which could be triggered by malicious input. Red Hat has released an update for fence-agents to remediate these vulnerabilities.
Potential Impact
The vulnerabilities could allow an attacker to cause denial of service conditions via the pyasn1 unbounded recursion issue or potentially bypass security checks due to PyJWT accepting unknown critical header extensions. These issues affect cluster node management, which could impact cluster stability and security if exploited. No known exploits are reported in the wild at this time.
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 official update as described in Red Hat advisory RHSA-2026:19138. Detailed update instructions are available at https://access.redhat.com/articles/11258. No additional mitigations are indicated by the vendor advisory.
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"]
- Cvss Version
- null
Threat ID: 6a16097ee29bf47b5064b00d
Added to database: 05/26/2026, 20:58:38 UTC
Last enriched: 07/19/2026, 22:53:36 UTC
Last updated: 07/31/2026, 19:22:58 UTC
Views: 86
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