OpenClaw versions prior to 2026.3.2 contain an authentication bypass vulnerability in the /api/channels route classification due to canonicalization depth mismatch between auth-path classification and route-path canonicalization. Attackers can bypass plugin route authentication checks by submitting deeply encoded slash variants such as multi-encoded %2f to access protected /api/channels endpoints.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
High
Difficult to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
Low
Partial data leak
Integrity
High
Complete data modification
Availability
None
No disruption
CVSS Vector v4.0
Weakness Type (CWE)
Vulnerable Products 1
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Openclaw Openclaw
cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:*
|
— |
2026.3.2
|
References 6
https://github.com/openclaw/openclaw/commit/2fd8264ab03bd178e62a5f0c50d1c8556c1…
disclosure@vulncheck.com
https://github.com/openclaw/openclaw/commit/7a7eee920a176a0043398c6b37bf4cc6eb9…
disclosure@vulncheck.com
https://github.com/openclaw/openclaw/commit/93b07240257919f770d1e263e1f22753937…
disclosure@vulncheck.com
https://github.com/openclaw/openclaw/commit/d74bc257d8432f17e50b23ae713d7e0623a…
disclosure@vulncheck.com
https://github.com/openclaw/openclaw/security/advisories/GHSA-v865-p3gq-hw6m
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/openclaw-authentication-bypass-via-encoded…
disclosure@vulncheck.com