CVE-2026-31975CWE-78

Cloud CLI WebSocket shell injection

High · published March 11, 2026

CVSS v4.0
8.7
EPSS
4%
Percentile
91.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
8.7 · HIGH
Vector
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
EPSS
0.04464 · 91.4th percentile
Weakness
CWE-78 · Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Published
2026-03-11T17:27Z
EPSS history
Timeline
  • 11 MAR 17:27Z
    Cloud CLI WebSocket shell injection
    cvelistv5