CVE-2026-31861

Cloud CLI (aka Claude Code UI) is a desktop and mobile UI for Claude Code, Cursor CLI, Codex, and Gemini-CLI. Prior to 1.24.0, The /api/user/git-config endpoint constructs shell commands by interpolating user-supplied gitName and gitEmail values into command strings passed to child_process.exec(). The input is placed within double quotes and only " is escaped, but backticks (`), $() command substitution, and \ sequences are all interpreted within double-quoted strings in bash. This allows authenticated attackers to execute arbitrary OS commands via the git configuration endpoint. This vulnerability is fixed in 1.24.0.

• CWE-94

• https://github.com/siteboon/claudecodeui/commit/86c33c1c0cb34176725a38f46960213714fc3e04Patch
• https://github.com/siteboon/claudecodeui/releases/tag/v1.24.0Release Notes
• https://github.com/siteboon/claudecodeui/security/advisories/GHSA-7fv4-fmmc-86g2Exploit, Vendor Advisory
• https://github.com/siteboon/claudecodeui/security/advisories/GHSA-7fv4-fmmc-86g2Exploit, Vendor Advisory

Published

Mar 11, 2026

Last Modified

Jun 17, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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