Cloud CLI WebSocket shell injection
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Code execution, Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-78 and CWE-287.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| siteboon | claudecodeui | before 1.25.0 | 1.25.0 | Patch available | CNA |
| — | @siteboon/claude-code-ui (npm) | before 1.25.0 | 1.25.0 | Patch available | GHSA-gv8f-wpm2-m5wr |
- claudecodeui Vendorsiteboon Affected before 1.25.0 Fixed in 1.25.0 Patch available CNA
- @siteboon/claude-code-ui (npm) Vendor— Affected before 1.25.0 Fixed in 1.25.0 Patch available GHSA-gv8f-wpm2-m5wr
Remediation
- Fix · CNA claudecodeui (siteboon) Fixed in 1.25.0
- Fix · GHSA-gv8f-wpm2-m5wr @siteboon/claude-code-ui (npm) Fixed in 1.25.0 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-31975
- 2026-10-03 Alias added: GHSA-gv8f-wpm2-m5wr
- 2026-10-25 EPSS moved to the 50th–90th percentile
- 2026-11-06 EPSS moved to the 90th–95th percentile
References
More siteboon Cloud Cli vulnerabilities
- TI-2026-24413 Shell Command Injection in Git Routes [CloudCLI UI] CVSS 4.0HIGH 8.7
- TI-2026-24414 Cloud CLI has Command Injection via Multiple Parameters CVSS 3.1CRITICAL 9.1
Sources
- CVE-2026-31975 · CVE Program
- CVE-2026-31975 · NVD
- FIRST EPSS
- GHSA-gv8f-wpm2-m5wr · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences