Improper Authentication in OpenClaw - #VU126451
Published: April 17, 2026
Vulnerability identifier: #VU126451
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: N/A
CWE-ID: CWE-287
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: OpenClaw
Affected software:
OpenClaw
OpenClaw
Detailed vulnerability description
The vulnerability allows a remote attacker to reach command dispatch without proper authentication checks.
The vulnerability exists due to improper authentication in Feishu webhook mode and card-action lifecycle validation when handling webhook requests or malformed card-action callbacks. A remote attacker can send a specially crafted request to reach command dispatch without proper authentication checks.
Exploitation is possible in deployments using Feishu webhook mode without a configured encryptKey, or when malformed card-action callbacks with blank callback tokens are processed.
Remediation
Install security update from vendor's website.