Authorization bypass through user-controlled key in OpenClaw - #VU125178
Published: April 8, 2026
Vulnerability identifier: #VU125178
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 redirect reply delivery to a different user.
The vulnerability exists due to improper identity resolution in the Synology Chat webhook handler when resolving reply recipients from usernames. A remote user can change or control a username match to redirect reply delivery to a different user.
Replies may be rebound to a mutable username match instead of the stable numeric user_id recorded by the webhook event.
Remediation
Install security update from vendor's website.