Vulnerability · Published Mar 11, 2026 · Assigned by GitHub_M
CVE-2026-31861Shell Command Injection in Git Routes [CloudCLI UI]
High 8.7
In plain English
A high-severity code injection in claudecodeui from siteboon. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 6.8% (higher than 94% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | @siteboon/claude-code-ui | 1.24.0 | GHSA-7fv4-fmmc-86g2 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| siteboon | claudecodeui | < 1.24.0 |
Weakness: CWE-94 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N