Vulnerability Description
OpenClaw's Matrix integration (npm package @openclaw/matrix) versions >= 2026.2.2 and < 2026.8.1 lowercase complete Matrix user IDs — including historical localparts and the case-sensitive server-name portion — when deriving the OpenClaw authorization identity. As a result, distinct authenticated Matrix accounts can normalize to the same authorization identity. A Matrix participant controlling a colliding account identifier (a protocol-valid identifier that differs from the configured one only by characters OpenClaw case/Unicode folds; display-name matching is not required) can inherit allowlist, owner-command, exec-approval, or plugin-approval authority configured for another account. The issue is fixed in 2026.8.1.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/openclaw/openclaw/security/advisories/GHSA-hgv5-f2r3-6v9r
- https://www.vulncheck.com/advisories/openclaw-matrix-before-2026.8.1-authorizati
FAQ
What is CVE-2026-100541?
CVE-2026-100541 is a vulnerability with a CVSS score of 7.5 (HIGH). OpenClaw's Matrix integration (npm package @openclaw/matrix) versions >= 2026.2.2 and < 2026.8.1 lowercase complete Matrix user IDs — including historical localparts and the case-sensitive server-name...
How severe is CVE-2026-100541?
CVE-2026-100541 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-100541?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.