OpenClaw versions prior to 2026.2.12 contain a vulnerability in the BlueBubbles (optional plugin) webhook handler in which it authenticates requests based solely on loopback remoteAddress without validating forwarding headers, allowing bypass of configured webhook passwords. When the gateway operates behind a reverse proxy, unauthenticated remote attackers can inject arbitrary BlueBubbles message and reaction events by reaching the proxy endpoint.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
High
Difficult to exploit
Attack Requirements
Present
Additional conditions required
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
High
Complete data modification
Availability
None
No disruption
CVSS Vector v4.0
Weakness Type (CWE)
References 4
https://github.com/openclaw/openclaw/commit/743f4b28495cdeb0d5bf76f6ebf4af01f6a…
disclosure@vulncheck.com
https://github.com/openclaw/openclaw/commit/f836c385ffc746cb954e8ee409f99d079bf…
disclosure@vulncheck.com
https://github.com/openclaw/openclaw/security/advisories/GHSA-xc7w-v5x6-cc87
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/openclaw-webhook-authentication-bypass-via…
disclosure@vulncheck.com