CVE-2026-42073

Description

OpenClaude is an open-source coding-agent command line interface for cloud and local model providers. Prior to version 0.5.1, the OpenClaude MCP authentication flow starts a temporary local HTTP server to handle OAuth callbacks. To prevent CSRF attacks, the server validates a state parameter against an internally stored value. However, due to a logic flaw in the order of conditionals, an attacker can completely bypass this check and force the server to shut down — without knowing the state value at all. This issue has been patched in version 0.5.1.

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Produits concernés

• Gitlawb openclaude

Scores CVSS

Faiblesses (CWE)

• CWE-352
• CWE-400

Références

• https://github.com/Gitlawb/openclaude/commit/739b8d1f40fde0e401a5cbd2b9a55d88bd5124ad Patch
• https://github.com/Gitlawb/openclaude/releases/tag/v0.5.1 Release Notes
• https://github.com/Gitlawb/openclaude/security/advisories/GHSA-c73c-x77g-854r ExploitVendor Advisory
• https://github.com/Gitlawb/openclaude/security/advisories/GHSA-c73c-x77g-854r ExploitVendor Advisory

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories