| Component | OpenClaw |
| Severity | high (CVSS 7.1) |
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N |
| Published (NVD) | 2026-04-21 |
| Last modified | 2026-06-17 |
| Affected versions | openclaw < 2026.3.28 |
| Fixed in | 2026.3.28 |
| Weakness | CWE-807 |
| CISA KEV | not listed |
NVD description
OpenClaw before 2026.3.28 contains an authorization bypass vulnerability in the chat.send gateway method where ACP-only provenance fields are gated by self-declared client metadata from WebSocket handshake rather than verified authorization state. Authenticated operator clients can spoof ACP identity labels and inject reserved provenance fields intended only for the ACP bridge by manipulating client metadata during connection.
What to do
- Upgrade OpenClaw to
2026.3.28or later. - Do not expose the component's API or UI to the internet without authentication in front of it.
Sources
- NVD: CVE-2026-41299
- https://github.com/openclaw/openclaw/security/advisories/GHSA-6xg4-82hv-cp6f
- https://www.vulncheck.com/advisories/openclaw-client-identity-spoofing-in-chat-send-gateway-provenance-guard
Read more
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