CVE-2026-42074: critical vulnerability in Gitlawb openclaude
OpenClaude: Sandbox Bypass via Model-Controlled `dangerouslyDisableSandbox` Input
Published
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28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.3epss 0.6%
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 · openclaudeRelated CVEs — Gitlawb openclaude
In the same product, most dangerous first.
CVE-2026-90712MEDIUMGitlawb openclaude xAI OAuth Callback xaiOAuthCallback.ts waitForCallback denial of serviceEPSS 0.6%CVE-2026-42073MEDIUMOpenClaude's MCP OAuth Callback: State Check Bypass via error Param Leads to DoSEPSS 0.3%CVE-2026-35570HIGHOpenClaude has Sandbox Bypass via Early-Exit Logic Flaw that Allows Path TraversalEPSS 0.2%