CVE-2026-35656

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.

Score

CVSS 3.1 6.5 Medium

Status

Analyzed - disclosure@vulncheck.com

Published

2026-04-10

Last modified

2026-06-23

Weaknesses

CWE-290

Affected products

• Openclaw (Openclaw)

References

• https://github.com/openclaw/openclaw/commit/630f1479c44f78484dfa21bb407cbe6f171dac87
• https://github.com/openclaw/openclaw/commit/fc2d29ea926f47c428c556e92ec981441228d2a4
• https://github.com/openclaw/openclaw/security/advisories/GHSA-844j-xrrq-wgh4
• https://www.vulncheck.com/advisories/openclaw-xff-loopback-spoofing-bypass-in-canvas-authentication-and-rate-limiter