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VulnerabilityPublished

CVE-2026-31975: siteboon claudecodeui · OS Command Injection

Affects siteboon claudecodeuiSource CVE Database V5

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Not known to be exploited · CVSS 8.7 High : upgrade to 1.25.0 soon.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 4.0 base score
8.7High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
3.5% chance of exploitation in 30 days – higher than 89% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – 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

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 11 Mar 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Upgrade claudecodeui and siteboon/claudecodeui to 1.25.0.

Affected software

ProductAffectedFixed in
siteboonclaudecodeuiAffected
  • <1.25.0
Fixed in
  • 1.25.0
GitHubsiteboon/claudecodeuipkg:github/siteboon/claudecodeuiOther threatsAffected
  • <1.25.0
Fixed in
  • 1.25.0

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Organizations should immediately upgrade claudecodeui to version 1.25.0 or later, where the vulnerability is patched. If upgrading is not immediately possible, restrict network access to the WebSocket server component using firewalls or network segmentation to limit exposure to trusted users only. Implement WebSocket message validation and input sanitization at the application level to prevent injection of malicious commands. Employ the principle of least privilege for the service running claudecodeui to minimize potential damage from exploitation. Monitor logs and network traffic for suspicious WebSocket activity indicative of exploitation attempts. Consider deploying runtime application self-protection (RASP) or host-based intrusion detection systems (HIDS) to detect and block command injection attempts. Finally, conduct security reviews and code audits for similar injection vulnerabilities in related components.

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.

References

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