Auth bypass in Gitlawb Openclaude
CVE-2026-42074
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.006 (48.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 48.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.006 · change: -0.001
Affected products
- Gitlawb Openclaude — versions < 0.5.1
Weakness classification (CWE)
References
- github.com/Gitlawb/openclaude/commit/aab489055c53dd64369414116fe93226d2656273 (Patch)
- github.com/Gitlawb/openclaude/pull/778 (Patch, Issue Tracking)
- github.com/Gitlawb/openclaude/security/advisories/GHSA-m77w-p5jj-xmhg (Exploit, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-42074?
- CVE-2026-42074 is a critical-severity vulnerability in Gitlawb Openclaude, classified under Improper Access Control. CVSS score: 9.8/10. Published 2026-06-02.
- How severe is CVE-2026-42074?
- Critical severity. CVSS v3 base score is 9.8 out of 10.