CVE-2026-42074

Name: CVE-2026-42074
Creator: NVD / NIST
Published: 2026-06-02T17:16:32.073+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.3/10EPSS 0.54%

Last modified Jun 17, 2026

CVE-2026-42074 is a critical-severity vulnerability rated 9.3/10 on the CVSS scale. OpenClaude is an open-source coding-agent command line interface for cloud and local model providers. Prior to version 0.5.1, the dangerouslyDisableSandbox parameter is exposed as part of the BashTool input schema, meaning the LLM (an untrusted principal per the project's own threat model) can set it to true in any tool_use response. EPSS estimates a 0.54% chance of exploitation in the next 30 days.

Description

OpenClaude is an open-source coding-agent command line interface for cloud and local model providers. Prior to version 0.5.1, the dangerouslyDisableSandbox parameter is exposed as part of the BashTool input schema, meaning the LLM (an untrusted principal per the project's own threat model) can set it to true in any tool_use response. Combined with the default allowUnsandboxedCommands: true setting, a prompt-injected model can escape the sandbox for any arbitrary command, achieving full host-level code execution. This issue has been patched in version 0.5.1.

Metrics

CVSS 3.1

9.8/10

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

CVSS 4.0

9.3/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/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

0.54%

41.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Gitlawb	Openclaude	< 0.5.1

References

https://github.com/Gitlawb/openclaude/commit/aab489055c53dd64369414116fe93226d2656273Patch
https://github.com/Gitlawb/openclaude/pull/778Issue Tracking, Patch
https://github.com/Gitlawb/openclaude/security/advisories/GHSA-m77w-p5jj-xmhgExploit, Vendor Advisory
https://github.com/Gitlawb/openclaude/security/advisories/GHSA-m77w-p5jj-xmhgExploit, Vendor Advisory

Timeline

Published: Jun 2, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-42074?

How severe is CVE-2026-42074?

CVE-2026-42074 has a CVSS score of 9.3/10 (CRITICAL severity). The EPSS model estimates a 0.54% probability of exploitation in the next 30 days.

How do I fix CVE-2026-42074?

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-2026-42074?

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

Scan your code now

Source: NVD / NIST