CVE-2026-42074 — Security Box Score

CVE · referencelatest edition

Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-42074CRITICAL

Gitlawb openclaude — OpenClaude: Sandbox Bypass via Model-Controlled `dangerouslyDisableSandbox` Input

  AV  AC  AT  PR  UI  VC  VI  VA   CVSS    EPSS   %ile   KEV
   N   L   N   N   N   H   H   H    9.3   .0054   43.3     —

AFFECTED
  Product     Versions   Fixed
  openclaude  < 0.5.1 –  —

TIMELINE
  Apr 23  Reserved by GitHub_M
  Jun 2   EXPLOIT PUBLISHED — CVE-2026-42074 (Gitlawb openclaude). Public exploit reference added.
  Jun 2   Published (CNA: GitHub_M)

CWE-284, CWE-306 · CNA: GitHub_M · CVSS v4.0 · 3 references · NVD status: Analyzed

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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
April 23, 2026	Reserved	Reserved by GitHub_M
June 2, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-42074 (Gitlawb openclaude). Public exploit reference added.
June 2, 2026	Published	Published (CNA: GitHub_M)

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Gitlawb	openclaude	—	< 0.5.1	—

Weaknesses

CWE-284 · CWE-306

References (3)

https://github.com/Gitlawb/openclaude/commit/aab489055c53dd64369414116fe93226d2656273 [Patch]
https://github.com/Gitlawb/openclaude/pull/778 [Issue Tracking, Patch]
https://github.com/Gitlawb/openclaude/security/advisories/GHSA-m77w-p5jj-xmhg [Exploit, Vendor Advisory]

Authoritative record: CVE-2026-42074 at cve.org

Vendors: gitlawb

Weaknesses: CWE-284 · CWE-306

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-42074 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.