Time-of-check Time-of-use (TOCTOU) Race Condition in OpenClaw - CVE-2026-32977
Published: April 8, 2026
Vulnerability identifier: #VU125143
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-32977
CWE-ID: CWE-367
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: OpenClaw
Affected software:
OpenClaw
OpenClaw
Detailed vulnerability description
The vulnerability allows a local user to modify files outside the validated sandbox path.
The vulnerability exists due to a time-of-check time-of-use race condition in the sandbox fs-bridge writeFile commit step when committing a file after path validation. A local user can race parent-path changes inside the sandbox to modify files outside the validated sandbox path.
This issue is a sandbox boundary bypass within the container mount namespace.
How to mitigate CVE-2026-32977
Install security update from vendor's website.