CVE-2026-42074

CRITICAL

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

Title source: cna
STIX 2.1

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.

Scores

CVSS v3 9.8
EPSS 0.0043
EPSS Percentile 34.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact total

Details

CWE
CWE-284 CWE-306
Status published
Products (3)
gitlawb/openclaude < 0.5.1
Gitlawb/openclaude < 0.5.1
npm/openclaude 0 - 0.5.1npm
Published Jun 02, 2026
Tracked Since Jun 02, 2026