OpenClaw versions prior to 2026.2.21 sandbox browser entrypoint launches x11vnc without authentication for noVNC observer sessions, allowing unauthenticated access to the VNC interface. Remote attackers on the host loopback interface can connect to the exposed noVNC port to observe or interact with the sandbox browser without credentials.
Fix
Patch, vendor advisory and mitigation references on NVD 3
- https://github.com/openclaw/openclaw/commit/621d8e1312482f122f18c43c72c67211b141da01 Patch
- https://github.com/openclaw/openclaw/commit/8c1518f0f3e0533593cd2dec3a46c9b746753661 Patch
- https://github.com/openclaw/openclaw/security/advisories/GHSA-25gx-x37c-7pph Mitigation, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 8.5 · openclawNVD modified 2026-10-08 16:17
Affected (CPE criteria) 1
cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:*
References 4
- https://github.com/openclaw/openclaw/commit/621d8e1312482f122f18c43c72c67211b141da01 Patch
- https://github.com/openclaw/openclaw/commit/8c1518f0f3e0533593cd2dec3a46c9b746753661 Patch
- https://github.com/openclaw/openclaw/security/advisories/GHSA-25gx-x37c-7pph Mitigation, Vendor Advisory
- https://www.vulncheck.com/advisories/openclaw-missing-vnc-authentication-in-sandbox-browser-novnc-observer Third Party Advisory