CVE-2026-31975

Cloud CLI WebSocket shell injection

CVSS 8.7 HIGHEPSS 3.4%CWE-78

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 8.7EPSS 3.4%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

11 Mar 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

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

Affected products

siteboon · claudecodeui

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References

https://github.com/siteboon/claudecodeui/commit/12e7f074d9563b3264caf9cec6e1b701c301af26 https://github.com/siteboon/claudecodeui/releases/tag/v1.25.0 https://github.com/siteboon/claudecodeui/security/advisories/GHSA-gv8f-wpm2-m5wr