Authorization bypass through user-controlled key in OpenClaw - #VU129451
Published: May 4, 2026
Vulnerability identifier: #VU129451
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: N/A
CWE-ID: CWE-639
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: OpenClaw
Affected software:
OpenClaw
OpenClaw
Detailed vulnerability description
The vulnerability allows a remote user to inject messages into chosen sessions.
The vulnerability exists due to authorization bypass through a user-controlled key in the POST /hooks/agent endpoint when processing authenticated hook requests with externally supplied sessionKey values. A remote user can send a specially crafted request with a chosen sessionKey to inject messages into chosen sessions.
Exploitation requires a valid hook token, request-selected session keys to be accepted, and target session keys to be derivable or guessable.
Remediation
Install security update from vendor's website.