RCE in Cloudcli Cloud Cli
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.
Vulnerability class: RCE (Remote Code Execution)
EPSS: 0.060 (92.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Cloudcli Cloud_cli
- Siteboon Claudecodeui — versions < 1.24.0
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC, Release Notes)
Frequently asked questions
- What is CVE-2026-31861?
- CVE-2026-31861 is a high-severity vulnerability in Cloudcli Cloud Cli, classified under Code Injection. CVSS score: 8.8/10. Published 2026-03-11.
- How severe is CVE-2026-31861?
- High severity. CVSS v3 base score is 8.8 out of 10.