Arbitrary Command Injection Affecting @siteboon/claude-code-ui package, versions <1.24.0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published15 Mar 2026
- disclosed11 Mar 2026
- creditToufik Airane, neo-ai-engineer
Introduced: 11 Mar 2026
NewCVE-2026-31862 (opens in a new tab)How to fix?
Upgrade @siteboon/claude-code-ui to version 1.24.0 or higher.
Overview
@siteboon/claude-code-ui is an A web-based UI for Claude Code CLI
Affected versions of this package are vulnerable to Arbitrary Command Injection in the handling of user-supplied parameters in multiple Git-related API endpoints, including file, branch, message, and commit, which are directly interpolated into shell command strings executed by the execAsync function. An attacker can execute arbitrary operating system commands with the privileges of the Node.js process by supplying specially crafted input containing shell metacharacters or command substitution syntax.