OpenClaw before 2026.3.7 contains an improper header validation vulnerability in fetchWithSsrFGuard that forwards custom authorization headers across cross-origin redirects. Attackers can trigger redirects to different origins to intercept sensitive headers like X-Api-Key and Private-Token intended for the original destination.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
Low
Partial 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:*:*
|
— |
2026.3.7
|
References 3
https://github.com/openclaw/openclaw/commit/46715371b0612a6f9114dffd1466941ac47…
disclosure@vulncheck.com
https://github.com/openclaw/openclaw/security/advisories/GHSA-6mgf-v5j7-45cr
disclosure@vulncheck.com
https://vulncheck.com/advisories/openclaw-mar-custom-authorization-header-leaka…
disclosure@vulncheck.com