Time-of-check Time-of-use (TOCTOU) Race Condition in OpenClaw - #VU135895
Published: June 30, 2026
Vulnerability identifier: #VU135895
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: N/A
CWE-ID: CWE-367
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 perform actions that should have required a stronger authorization or policy check.
The vulnerability exists due to a time-of-check time-of-use race condition in the MS Teams safeFetch feature when processing lower-trust caller or configured input paths. A remote user can trigger a DNS rebinding race to perform actions that should have required a stronger authorization or policy check.
Only instances where the affected feature is enabled and reachable are vulnerable, and practical impact depends on whether lower-trust input can reach that path.
Remediation
Install security update from vendor's website.