CVE-2026-35656

MEDIUM

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

Title source: cna

Description

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 (4)

[Third Party Advisory] https://github.com/openclaw/openclaw/security/advisories/GHSA-844j-xrrq-wgh4

[Patch] https://github.com/openclaw/openclaw/commit/630f1479c44f78484dfa21bb407cbe6f171dac87

[Patch] https://github.com/openclaw/openclaw/commit/fc2d29ea926f47c428c556e92ec981441228d2a4

View Patch ZIP pw:eip

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

Scores

CVSS v3 6.5

EPSS 0.0016

EPSS Percentile 36.1%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Details

CWE

CWE-290

Status published

Products (4)

npm/openclaw 0 - 2026.3.22npm

OpenClaw/OpenClaw < 2026.3.22

openclaw/openclaw < 2026.3.22

OpenClaw/OpenClaw 2026.3.22

Published Apr 10, 2026

Tracked Since Apr 10, 2026