Vulnerability Details CVE-2026-31975
Cloud CLI (aka Claude Code UI) is a desktop and mobile UI for Claude Code, Cursor CLI, Codex, and Gemini-CLI. Prior to 1.25.0, OS Command Injection via WebSocket Shell. Both projectPath and initialCommand in server/index.js are taken directly from the WebSocket message payload and interpolated into a bash command string without any sanitization, enabling arbitrary OS command execution. A secondary injection vector exists via unsanitized sessionId. This vulnerability is fixed in 1.25.0.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.005
EPSS Ranking 66.6%
CVSS Severity
CVSS v3 Score 9.8
References
- https://github.com/siteboon/claudecodeui/commit/12e7f074d9563b3264caf9cec6e1b701c301af26
- https://github.com/siteboon/claudecodeui/releases/tag/v1.25.0
- https://github.com/siteboon/claudecodeui/security/advisories/GHSA-gv8f-wpm2-m5wr
- https://github.com/siteboon/claudecodeui/security/advisories/GHSA-gv8f-wpm2-m5wr