Observable discrepancy in OpenClaw - CVE-2026-4040
Published: May 4, 2026
Vulnerability identifier: #VU129417
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-4040
CWE-ID: CWE-203
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 disclose sensitive information.
The vulnerability exists due to observable discrepancy in tools.exec.safeBins approval flow when validating candidate file paths. A remote user can probe existing and non-existing filenames to disclose sensitive information.
Exploitation requires access to the execution surface.
How to mitigate CVE-2026-4040
Install security update from vendor's website.