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): * python-pyjwt: PyJWT: Authentication bypass due to forged JSON Web Tokens (CVE-2026-48526) 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 were updated to fix an authentication bypass vulnerability in the python-pyjwt library (CVE-2026-48526). This vulnerability allows attackers to bypass authentication by using forged JSON Web Tokens, potentially impacting the remote power management of cluster nodes. The update addresses this issue by patching the affected packages. The advisory references Red Hat's errata RHSA-2026:25902 and provides detailed package updates for multiple architectures and extended support versions of Red Hat Enterprise Linux 10.
Potential Impact
The vulnerability allows authentication bypass via forged JSON Web Tokens in the python-pyjwt library used by fence-agents. This could enable an attacker to remotely manage cluster nodes without proper authorization, potentially forcing failed or unreachable nodes to restart or be removed from the cluster. The security impact is rated as Important by Red Hat, indicating a significant risk if exploited.
Mitigation Recommendations
Red Hat has released an official security update for fence-agents in Red Hat Enterprise Linux 10 to address CVE-2026-48526. Users should apply the update as described in Red Hat advisory RHSA-2026:25902 and the related article https://access.redhat.com/articles/11258. Applying this update mitigates the authentication bypass vulnerability. No additional mitigation steps are indicated by the vendor.
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): * python-pyjwt: PyJWT: Authentication bypass due to forged JSON Web Tokens (CVE-2026-48526) 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
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The fence-agents packages in Red Hat Enterprise Linux 10 were updated to fix an authentication bypass vulnerability in the python-pyjwt library (CVE-2026-48526). This vulnerability allows attackers to bypass authentication by using forged JSON Web Tokens, potentially impacting the remote power management of cluster nodes. The update addresses this issue by patching the affected packages. The advisory references Red Hat's errata RHSA-2026:25902 and provides detailed package updates for multiple architectures and extended support versions of Red Hat Enterprise Linux 10.
Potential Impact
The vulnerability allows authentication bypass via forged JSON Web Tokens in the python-pyjwt library used by fence-agents. This could enable an attacker to remotely manage cluster nodes without proper authorization, potentially forcing failed or unreachable nodes to restart or be removed from the cluster. The security impact is rated as Important by Red Hat, indicating a significant risk if exploited.
Mitigation Recommendations
Red Hat has released an official security update for fence-agents in Red Hat Enterprise Linux 10 to address CVE-2026-48526. Users should apply the update as described in Red Hat advisory RHSA-2026:25902 and the related article https://access.redhat.com/articles/11258. Applying this update mitigates the authentication bypass vulnerability. No additional mitigation steps are indicated by the vendor.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:25902
- Cve Count
- 1
- Additional Cves
- []
- Cvss Version
- null
Threat ID: 6a2fc0030b89be688883c30c
Added to database: 6/15/2026, 9:04:03 AM
Last enriched: 6/15/2026, 9:04:40 AM
Last updated: 6/15/2026, 10:24:38 AM
Views: 4
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