🛡️ CVE-2026-42073
🟡 CVSS 6.5 — Medium ✅ No Known Exploit CWE-352 NVD
6.5
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

Details

Severity Medium
CVSS Score 6.5
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CWE CWE-352
Public Exploit ✅ No
Source NVD
Published 2026-05-12
Updated 2026-06-10
Modified 2026-06-09

Affected Packages

Software From version Fixed in
@gitlawb/openclaude — —
openclaude — 0.5.1
unknown — —

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