OpenClaw before 2026.3.22 contains an authentication bypass vulnerability in the X-Forwarded-For header processing when trustedProxies is configured, allowing attackers to spoof loopback hops. Remote attackers can inject forged forwarding headers to bypass canvas authentication and rate-limiting protections by masquerading as loopback clients.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
Present
Additional conditions required
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
Low
Partial data leak
Integrity
Low
Partial data modification
Availability
None
No disruption
CVSS Vector v4.0
Weakness Type (CWE)
References 4
https://github.com/openclaw/openclaw/commit/630f1479c44f78484dfa21bb407cbe6f171…
disclosure@vulncheck.com
https://github.com/openclaw/openclaw/commit/fc2d29ea926f47c428c556e92ec98144122…
disclosure@vulncheck.com
https://github.com/openclaw/openclaw/security/advisories/GHSA-844j-xrrq-wgh4
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/openclaw-xff-loopback-spoofing-bypass-in-c…
disclosure@vulncheck.com