Issued at: 2026-11-04
Updated at: 2026-11-04
Advisory content derived from Red Hat RHSA-2026:94500, © Red Hat, Inc., used under CC BY 4.0, with modifications.
Synopsis
Critical: 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: Authentication bypass via empty HMAC key acceptance (CVE-2026-102266)
* pyjwt: PyJWT: Authentication bypass via improper public key validation (CVE-2026-102268)
* pyjwt: PyJWT: Authentication bypass via acceptance of DER public keys as HMAC secrets (CVE-2026-102271)
* pyjwt: pyjwt: Verification key substitution via unvalidated JWKS redirects (CVE-2026-102267)
* pyjwt: pyjwt: Token forgery via improper Unicode byte-order mark handling (CVE-2026-102272)
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.