What’s Vulnerable › Vulnerabilities

CVE-2026-41338: OpenClaw < 2026.3.31 - Time-of-Check-Time-of-Use (TOCTOU) Vulnerability in Sandbox File Operations

• Severity: medium (CVSS 5.0 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-04-23 · updated 2026-06-17
• Weakness: CWE-367

Description

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 operations to manipulate files between validation and execution.

Affected products

• OpenClaw: before 2026.3.31 — fixed in 2026.3.31

How to fix

Upgrade to a fixed version: OpenClaw 2026.3.31. Check the vendor advisory for mitigations.

References

• https://github.com/openclaw/openclaw/commit/32a4a47d602e0618f87b3e59f94d8c142767f860
• https://github.com/openclaw/openclaw/security/advisories/GHSA-rm5c-4rmf-vvhw
• https://www.vulncheck.com/advisories/openclaw-time-of-check-time-of-use-toctou-vulnerability-in-sandbox-file-operations

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