Every CVE Search/ Get API key

CVE-2026-41338

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

4.3 MediumFix available

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.

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
High
Privileges needed
Low
User interaction
Passive

What an attacker can affect

Confidentiality
None
Integrity
High
Availability
Low

Exploit likelihood

0.09%Up 0.1 points since Apr 24, 2026
90%50%10%1%

What each source reports

CVE List Score used 4.3

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

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.

Record
CVE-2026-41338
CVSS 4.0
4.3 MediumCVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:P/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N
CVSS 3.1
5.0 MediumCVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:L
Weakness
CWE-367
Updated
2026-11-02
EUVDEUVD-2026-25322 4.3

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.

Record
EUVD-2026-25322
CVSS 4.0
4.3 MediumCVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:P/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-9hhx-mwf2-vr7v 4.3

OpenClaw before 2026.3.31 contains a time-of-check-time-of-use vulnerability in sandbox file...

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.

Record
GHSA-9hhx-mwf2-vr7v
CVSS 4.0
4.3 MediumCVSS: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
CVSS 3.1
5.0 MediumCVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:L
Weakness
CWE-367
Updated
2026-11-02
GitHub AdvisoriesGHSA-rm5c-4rmf-vvhw 5.8

OpenClaw: Sandbox file operations use check-then-act, bypassing fd-based TOCTOU defenses

Summary

Sandbox file operations use check-then-act, bypassing fd-based TOCTOU defenses

Current Maintainer Triage

  • Status: narrow
  • Normalized severity: medium
  • Assessment: Released workspace-only apply_patch remove and mkdir operations were still check-then-act, but the draft overstates scope by bundling broader edit paths; keep it open but narrow it to the actual sandbox-workspace mutation boundary.

Affected Packages / Versions

  • Package: openclaw (npm)
  • Latest published npm version: 2026.3.31
  • Vulnerable version range: <=2026.3.28
  • Patched versions: >= 2026.3.31
  • First stable tag containing the fix: v2026.3.31

Fix Commit(s)

  • 32a4a47d602e0618f87b3e59f94d8c142767f860 — 2026-03-30T16:49:49+01:00

OpenClaw thanks @AntAISecurityLab for reporting.

Record
GHSA-rm5c-4rmf-vvhw
CVSS 4.0
5.8 MediumCVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
Weakness
CWE-367
Updated
2026-11-02
NVD 4.3

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.

Record
CVE-2026-41338
CVSS 4.0
4.3 MediumCVSS: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
CVSS 3.1
5.0 MediumCVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:L
Weakness
CWE-367
Updated
2026-11-02
OSV 4.3

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

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.

Record
CVE-2026-41338
CVSS 4.0
4.3 MediumCVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:P/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N
Weakness
CWE-367
Updated
2026-11-02
OSVGHSA-rm5c-4rmf-vvhw 5.8

OpenClaw: Sandbox file operations use check-then-act, bypassing fd-based TOCTOU defenses

Summary

Sandbox file operations use check-then-act, bypassing fd-based TOCTOU defenses

Current Maintainer Triage

  • Status: narrow
  • Normalized severity: medium
  • Assessment: Released workspace-only apply_patch remove and mkdir operations were still check-then-act, but the draft overstates scope by bundling broader edit paths; keep it open but narrow it to the actual sandbox-workspace mutation boundary.

Affected Packages / Versions

  • Package: openclaw (npm)
  • Latest published npm version: 2026.3.31
  • Vulnerable version range: <=2026.3.28
  • Patched versions: >= 2026.3.31
  • First stable tag containing the fix: v2026.3.31

Fix Commit(s)

  • 32a4a47d602e0618f87b3e59f94d8c142767f860 — 2026-03-30T16:49:49+01:00

OpenClaw thanks @AntAISecurityLab for reporting.

Record
GHSA-rm5c-4rmf-vvhw
CVSS 4.0
5.8 MediumCVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
Weakness
CWE-367
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
openclaw
npm
 through 2026.3.28
2026.3.31
openclaw
npm
 before 2026.3.31
2026.3.31

History

History
RecordedChangedSources
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-41338 is a medium vulnerability (CVSS 4.3) in Openclaw, published April 3, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.09%, the 0th percentile. Fixed in openclaw 2026.3.31.

References

Pages All vulnerabilities Browse Docs Sources Guide Get API key
MoveEnter Open