CVE-2026-31975CRITICAL 9.8EPSS p87.4%

CVE-2026-31975CVE-2026-31975

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.

Scoring

CVSS 3.19.8 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS3.43% probability of exploitation · percentile 87.4% · 2026-06-19T12:03:05Z
Published2026-03-11
Last modified2026-03-20

Underlying weaknesses· 1

CWE-78

References

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

1

TypeTargetConfidenceTier
WeaknessImproper Neutralization of Special Elements used in an OS Command ('OS Command Injection')cwe-780%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.