Red Hat Security Advisory: fence-agents security update
This advisory addresses security vulnerabilities in the fence-agents packages used in Red Hat Enterprise Linux 10.0 Extended Update Support. The fence-agents provide scripts for remote power management of cluster devices, enabling forced restart and removal of failed or unreachable nodes. Two vulnerabilities are fixed: CVE-2026-32597, where PyJWT accepts unknown 'crit' 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 and applies to multiple architectures of Red Hat Enterprise Linux 10.0. Users are advised to apply the provided update to remediate these issues.
AI Analysis
Technical Summary
The fence-agents packages in Red Hat Enterprise Linux 10.0 Extended Update Support contain two security vulnerabilities. CVE-2026-32597 involves PyJWT accepting unknown critical header extensions, violating RFC 7515 section 4.1.11 requirements. CVE-2026-30922 is a denial of service vulnerability in the pyasn1 library due to unbounded recursion. These issues could impact the reliability and security of cluster node management. Red Hat has released updated fence-agents packages addressing these vulnerabilities for multiple architectures and support variants of RHEL 10.0. The advisory references Red Hat's errata RHSA-2026:17083 for detailed remediation instructions.
Potential Impact
The vulnerabilities affect the fence-agents packages responsible for remote power management in cluster environments. The PyJWT issue (CVE-2026-32597) could lead to improper handling of JWT tokens due to acceptance of unknown critical header extensions, potentially violating security expectations. The pyasn1 vulnerability (CVE-2026-30922) allows denial of service via unbounded recursion, which could cause service disruption. These issues may impact cluster stability and security but no known exploits in the wild have been reported. The overall security impact is rated as important by Red Hat.
Mitigation Recommendations
Red Hat has released updated fence-agents packages for Red Hat Enterprise Linux 10.0 Extended Update Support that address these vulnerabilities. Users should apply the security update as described in Red Hat advisory RHSA-2026:17083 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
This advisory addresses security vulnerabilities in the fence-agents packages used in Red Hat Enterprise Linux 10.0 Extended Update Support. The fence-agents provide scripts for remote power management of cluster devices, enabling forced restart and removal of failed or unreachable nodes. Two vulnerabilities are fixed: CVE-2026-32597, where PyJWT accepts unknown 'crit' 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 and applies to multiple architectures of Red Hat Enterprise Linux 10.0. Users are advised to apply the provided update to remediate these issues.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The fence-agents packages in Red Hat Enterprise Linux 10.0 Extended Update Support contain two security vulnerabilities. CVE-2026-32597 involves PyJWT accepting unknown critical header extensions, violating RFC 7515 section 4.1.11 requirements. CVE-2026-30922 is a denial of service vulnerability in the pyasn1 library due to unbounded recursion. These issues could impact the reliability and security of cluster node management. Red Hat has released updated fence-agents packages addressing these vulnerabilities for multiple architectures and support variants of RHEL 10.0. The advisory references Red Hat's errata RHSA-2026:17083 for detailed remediation instructions.
Potential Impact
The vulnerabilities affect the fence-agents packages responsible for remote power management in cluster environments. The PyJWT issue (CVE-2026-32597) could lead to improper handling of JWT tokens due to acceptance of unknown critical header extensions, potentially violating security expectations. The pyasn1 vulnerability (CVE-2026-30922) allows denial of service via unbounded recursion, which could cause service disruption. These issues may impact cluster stability and security but no known exploits in the wild have been reported. The overall security impact is rated as important by Red Hat.
Mitigation Recommendations
Red Hat has released updated fence-agents packages for Red Hat Enterprise Linux 10.0 Extended Update Support that address these vulnerabilities. Users should apply the security update as described in Red Hat advisory RHSA-2026:17083 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-2026:17083
- Cve Count
- 2
- Additional Cves
- ["CVE-2026-32597"]
- Cvss Version
- null
Threat ID: 6a16097de29bf47b5064a2c5
Added to database: 05/26/2026, 20:58:37 UTC
Last enriched: 07/19/2026, 22:53:47 UTC
Last updated: 07/31/2026, 19:22:58 UTC
Views: 62
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