OpenClaw before 2026.3.22 contains a webhook reply delivery vulnerability that allows attackers to rebind chat replies to unintended users by exploiting mutable username matching instead of stable numeric user identifiers. Attackers can manipulate username changes to redirect webhook-triggered replies to different users, bypassing the intended recipient binding recorded in webhook events.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
High
Difficult to exploit
Attack Requirements
None
No additional conditions
Privileges Required
Low
Basic 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)
References 4
https://github.com/openclaw/openclaw/commit/630f1479c44f78484dfa21bb407cbe6f171…
disclosure@vulncheck.com
https://github.com/openclaw/openclaw/commit/7ade3553b74ee3f461c4acd216653d5ba41…
disclosure@vulncheck.com
https://github.com/openclaw/openclaw/security/advisories/GHSA-wv46-v6xc-2qhf
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/openclaw-webhook-reply-rebinding-via-usern…
disclosure@vulncheck.com