Reliance on Untrusted Inputs in a Security Decision in OpenClaw - CVE-2026-41299
Published: April 30, 2026
Vulnerability identifier: #VU128641
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-41299
CWE-ID: CWE-807
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: OpenClaw
Affected software:
OpenClaw
OpenClaw
Detailed vulnerability description
The vulnerability allows a remote user to spoof ACP identity labels and inject reserved provenance fields.
The vulnerability exists due to reliance on untrusted inputs in a security decision in chat.send provenance handling in src/gateway/server-methods/chat.ts and src/gateway/server/ws-connection/message-handler.ts when processing self-declared client metadata from the WebSocket handshake. A remote user can supply spoofed client identity metadata to spoof ACP identity labels and inject reserved provenance fields.
How to mitigate CVE-2026-41299
Install security update from vendor's website.