CVE-2026-35656

MEDIUM6.5

OpenClaw < 2026.3.22 - XFF Loopback Spoofing Bypass in Canvas Authentication and Rate Limiter

Published Apr 10, 2026

Modified 1 weeks ago

Details

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.

References

FIX

https://github.com/openclaw/openclaw/commit/630f1479c44f78484dfa21bb407cbe6f171dac87

FIX

https://github.com/openclaw/openclaw/commit/fc2d29ea926f47c428c556e92ec981441228d2a4

ADVISORY

https://github.com/openclaw/openclaw/security/advisories/GHSA-844j-xrrq-wgh4

ADVISORY

https://www.cve.org/CVERecord?id=CVE-2026-35656

ADVISORY

https://www.vulncheck.com/advisories/openclaw-xff-loopback-spoofing-bypass-in-canvas-authentication-and-rate-limiter

CVSS Analysis