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VulnerabilityPublished

CVE-2026-31862: siteboon claudecodeui · OS Command Injection

Affects siteboon claudecodeuiSource CVE Database V5

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Not known to be exploited · CVSS 9.1 Critical : upgrade to 1.24.0 as a priority.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 3.1 base score
9.1Critical
How severe the flaw is on the 0–10 CVSS scale.

Contested

Critical score, yet low EPSS after six months
EPSS
0.4% chance of exploitation in 30 days – higher than 39% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 1.24.0
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

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 24 Oct 2026.

What to do

Upgrade claudecodeui and siteboon/claudecodeui to 1.24.0.

Affected software

ProductAffectedFixed in
siteboonclaudecodeuiAffected
  • <1.24.0
Fixed in
  • 1.24.0
GitHubsiteboon/claudecodeuipkg:github/siteboon/claudecodeuiOther threatsAffected
  • <1.24.0
Fixed in
  • 1.24.0

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 all instances of siteboon's Cloud CLI (Claude Code UI) to version 1.24.0 or later, where the vulnerability is fixed. Until upgrades can be applied, restrict access to the affected API endpoints to trusted users only and monitor logs for suspicious command execution patterns. Implement strict input validation and sanitization on any user-supplied parameters passed to system commands, avoiding unsafe string interpolation in code. Employ the principle of least privilege by running the Cloud CLI processes with minimal permissions to limit the impact of potential exploitation. Network segmentation can help contain any compromise. Additionally, conduct thorough audits of development environments and repositories for signs of unauthorized changes. Security teams should update detection rules to identify attempts to exploit this vulnerability and educate developers and administrators about the risks of command injection in CLI tools.

Description

Cloud CLI (aka Claude Code UI) is a desktop and mobile UI for Claude Code, Cursor CLI, Codex, and Gemini-CLI. Prior to 1.24.0, multiple Git-related API endpoints use execAsync() with string interpolation of user-controlled parameters (file, branch, message, commit), allowing authenticated attackers to execute arbitrary OS commands. This vulnerability is fixed in 1.24.0.

References

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