OpenClaw versions 2026.1.29-beta.1 prior to 2026.2.14 contain a vulnerability in the sandbox browser bridge server in which it accepts requests without requiring gateway authentication, allowing local attackers to access browser control endpoints. A local attacker can enumerate tabs, retrieve WebSocket URLs, execute JavaScript, and exfiltrate cookies and session data from authenticated browser contexts.
Attack Parameters
Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
None
No disruption
CVSS Vector v4.0
Weakness Type (CWE)
References 5
https://github.com/openclaw/openclaw/commit/4711a943e30bc58016247152ba06472dab0…
disclosure@vulncheck.com
https://github.com/openclaw/openclaw/commit/6dd6bce997c48752134f2d6ed89b27de01c…
disclosure@vulncheck.com
https://github.com/openclaw/openclaw/commit/cd84885a4ac78eadb7bf321aae98db95194…
disclosure@vulncheck.com
https://github.com/openclaw/openclaw/security/advisories/GHSA-h9g4-589h-68xv
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/openclaw-beta-authentication-bypass-in-san…
disclosure@vulncheck.com