Time-of-check Time-of-use (TOCTOU) Race Condition in OpenClaw - #VU127182
Published: April 23, 2026
Vulnerability identifier: #VU127182
CSH Severity: Medium
CVSS v4: 8.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-367
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to a time-of-check time-of-use race condition in the OpenShell sandbox filesystem read bridge when handling filesystem read operations. A remote attacker can swap a symlink to cause bytes outside the intended mount root to be read and disclose sensitive information.
Affected software
OpenClaw
Remediation
Install security update from vendor's website.
OpenClaw - update to 2026.4.22