CVE-2026-100541
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| openclaw | matrix | 2026.2.2 < 2026.8.1 | affected |
| openclaw | matrix | 2026.8.1 | unaffected |
Weaknesses
- CWE-178: Improper Handling of Case Sensitivity
References
- https://github.com/openclaw/openclaw/security/advisories/GHSA-hgv5-f2r3-6v9r
- https://www.vulncheck.com/advisories/openclaw-matrix-before-2026.8.1-authorization-bypass-via-case-folding
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