CVE-2026-35656
OpenClaw < 2026.3.22 - XFF Loopback Spoofing Bypass in Canvas Authentication and Rate Limiter
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-290 |
| Vendor | openclaw |
| Product | openclaw |
| Published | Apr 10, 2026 |
| Last Updated | Apr 10, 2026 |
Stay Ahead of the Next One
Get instant alerts for openclaw openclaw
Be the first to know when new medium vulnerabilities affecting openclaw openclaw are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None
Affected Versions
OpenClaw / OpenClaw
0 < 2026.3.22
References
github.com: https://github.com/openclaw/openclaw/security/advisories/GHSA-844j-xrrq-wgh4 github.com: https://github.com/openclaw/openclaw/commit/630f1479c44f78484dfa21bb407cbe6f171dac87 github.com: https://github.com/openclaw/openclaw/commit/fc2d29ea926f47c428c556e92ec981441228d2a4 vulncheck.com: https://www.vulncheck.com/advisories/openclaw-xff-loopback-spoofing-bypass-in-canvas-authentication-and-rate-limiter
Credits
🔍 lintsinghua