CVE-2026-100541
OpenClaw Matrix before 2026.8.1 Authorization Bypass via Case Folding
- State
- Published
- Severity
- 7.7 High
- Published
- Sep 26, 2026
- Updated
- Oct 8, 2026
- Reserved
- Sep 26, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 7.7 High | 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 | VulnCheck |
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H | VulnCheck |
Weaknesses
- CWE-178 Improper Handling of Case Sensitivity
Affected Products
| Product | Versions |
|---|---|
matrixopenclaw |
|
References
- GitHub Security Advisory (GHSA-hgv5-f2r3-6v9r)vendor-advisory
- VulnCheck Advisory: OpenClaw Matrix before 2026.8.1 Authorization Bypass via Case Foldingthird-party-advisory
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