CVE-2026-31975 | THREATINT

Description

Cloud CLI (aka Claude Code UI) is a desktop and mobile UI for Claude Code, Cursor CLI, Codex, and Gemini-CLI. Prior to 1.25.0, 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.

PUBLISHED Reserved 2026-03-10 | Published 2026-03-11 | Updated 2026-03-12 | Assigner GitHub_M

HIGH: 8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Problem types

CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Product status

< 1.25.0

affected

References

github.com/...codeui/security/advisories/GHSA-gv8f-wpm2-m5wr exploit

github.com/...codeui/security/advisories/GHSA-gv8f-wpm2-m5wr

github.com/...ommit/12e7f074d9563b3264caf9cec6e1b701c301af26

github.com/siteboon/claudecodeui/releases/tag/v1.25.0

cve.org (CVE-2026-31975)

nvd.nist.gov (CVE-2026-31975)

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