---
id: CVE-2026-73222
title: Claude Code Templates is a CLI tool for configuring and monitoring Claude Code
summary: >-
  Claude Code Templates is a CLI tool for configuring and monitoring Claude
  Code. Prior to 1.29.4, the Claude Code Studio server launched by the --studio
  option in cli-tool/src/sandbox-server.js binds to all interfaces on port 3444,
  permit…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'
cwe:
  - CWE-78
  - CWE-306
  - CWE-352
vendor: claude-code-templates
product: claude-code-templates
affected:
  - claude-code-templates <= 1.29.2
patched:
  - claude-code-templates 1.29.4
published: '2026-08-11'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T20:50:00.950'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-73222'
references:
  - url: 'https://github.com/davila7/claude-code-templates/blob/main/CHANGELOG.md'
    label: security-advisories@github.com
  - url: >-
      https://github.com/davila7/claude-code-templates/commit/bc4618b07232633c1c0aac12a43e436268d31783
    label: security-advisories@github.com
  - url: >-
      https://github.com/davila7/claude-code-templates/security/advisories/GHSA-79wm-x847-7cvg
    label: security-advisories@github.com
  - url: >-
      https://github.com/davila7/claude-code-templates/security/advisories/GHSA-79wm-x847-7cvg
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-73222'
  - url: 'https://github.com/advisories/GHSA-79wm-x847-7cvg'
tags:
  - nvd
  - ghsa
  - npm
epss: 0.00319
epssPercentile: 0.22263
aliases:
  - GHSA-79wm-x847-7cvg
ecosystem: npm
ingestedAt: '2026-09-03T20:08:06.664Z'
---

## Overview

Claude Code Templates is a CLI tool for configuring and monitoring Claude Code. Prior to 1.29.4, the Claude Code Studio server launched by the --studio option in cli-tool/src/sandbox-server.js binds to all interfaces on port 3444, permits cross-origin requests, and requires no authentication. The POST /api/execute endpoint passes the prompt request-body field to executeLocalTask(), and POST /api/install-agent passes the agentName request-body field to a child process. The same unsafe agent field path is reachable from /api/execute through checkAndInstallAgent(). These attacker-controlled values reach child_process.spawn() with shell execution enabled, causing Node.js to construct a shell command in which metacharacters are interpreted. An attacker who can reach the port directly, or who convinces a developer running Studio to visit a malicious website, can execute arbitrary operating-system commands with the developer's privileges and compromise source code, credentials, and local data. This issue is fixed in version 1.29.4.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-73222)

Affected packages:

- `claude-code-templates <= 1.29.2`

Patched in:

- `claude-code-templates 1.29.4`

Source: https://github.com/advisories/GHSA-79wm-x847-7cvg