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CVE-2026-42074

OpenClaude: Sandbox Bypass via Model-Controlled `dangerouslyDisableSandbox` Input

CVSS 9.3 CRITICALEPSS 0.5%CWE-284CWE-306
Vexday Risk Score
28Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS 9.3EPSS 0.5%KEV nãoPoC Nuclei Metasploit Patch
Lifecycle
02 Jun 2026Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
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.
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
Affected products
Gitlawb · openclaude

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