by Kastro
Paper/Archive/CVE-2026-31975

CVE-2026-31975

siteboon claudecodeui — Cloud CLI WebSocket shell injection

EPSS 4%public exploitCVSS 9.8
critical.is priorityof 100
57
CVSS 9.8 (NVD)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 89.4.894 × 2017.9Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
claudecodeui< 1.25.0–CNA

Scores by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
GitHub_M (CNA)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
CISA ADPSSVCExploitation: poc · Automatable: yes · Technical impact: total

References

exploitgithub.com/siteboon/claudecodeui/security/advisories/GHSA-gv8f-wpm2-m5wrrefgithub.com/siteboon/claudecodeui/commit/12e7f074d9563b3264caf9cec6e1b701c301af26refgithub.com/siteboon/claudecodeui/releases/tag/v1.25.0