HighVulnerability
CVE-2026-31861: Cloud CLI command injection through the git-config endpoint
- Source
- NVD(opens in a new tab)
- Identifier
- CVE-2026-31861
- Published
- Record updated
- Affected
- @siteboon/claude-code-ui <= 1.23.0
- Fixed in
- 1.24.0
- released March 9, 2026, 2 days before disclosure
- Known exploitation
- Not listed in the CISA Known Exploited Vulnerabilities catalog at the last check.
- EPSS
- 6.3%
Summary
CVE-2026-31861 affects Cloud CLI (aka Claude Code UI) prior to 1.24.0. The /api/user/git-config endpoint interpolates user-supplied gitName and gitEmail values into shell command strings passed to child_process.exec(), escaping only the double quote character. Backticks, $() substitution and backslash sequences remain interpreted inside double quotes, letting an authenticated attacker run arbitrary OS commands.
Mitigation
Fixed in 1.24.0.
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