What is CVE-2026-41338?

CVE-2026-41338 is a medium-severity vulnerability in Openclaw, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 5.0/10. Published 2026-04-23.

How severe is CVE-2026-41338?

Medium severity. CVSS v3 base score is 5.0 out of 10.

Vulnerability in Openclaw

CVE-2026-41338

OpenClaw before 2026.3.31 contains a time-of-check-time-of-use vulnerability in sandbox file operations that allows attackers to bypass fd-based defenses. Attackers can exploit check-then-act patterns in apply_patch, remove, and mkdir oper…

Vulnerability class: TOCTOU (Time-of-Check to Time-of-Use)

EPSS: 0.000 (2.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.0 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:L.

Affected products

Openclaw — versions 0, 2026.3.31

Weakness classification (CWE)

CWE-367 — Time-of-check Time-of-use (TOCTOU) Race Condition

References

GitHub Security Advisory (GHSA-rm5c-4rmf-vvhw) (vendor-advisory, Vendor Advisory)
Patch Commit (Patch, patch)
VulnCheck Advisory: OpenClaw < 2026.3.31 - Time-of-Check-Time-of-Use (TOCTOU) Vulnerability in Sandbox File Operations (Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2026-41338?: CVE-2026-41338 is a medium-severity vulnerability in Openclaw, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 5.0/10. Published 2026-04-23.
How severe is CVE-2026-41338?: Medium severity. CVSS v3 base score is 5.0 out of 10.