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CVE-2026-41338

MEDIUMCVSS 4.3/10EPSS 0.09%

Last modified

CVE-2026-41338 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. 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.. EPSS estimates a 0.09% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
5/10

CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:L

CVSS 4.0
4.3/10

CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:P/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability
0.09%

0.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
OpenclawOpenclaw< 2026.3.31

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is 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 operations to manipulate files between validation and execution.
How severe is CVE-2026-41338?
CVE-2026-41338 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.09% probability of exploitation in the next 30 days.
How do I fix CVE-2026-41338?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-41338?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST