CVE-2026-73222
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.
- CVSS 3.1
- 8.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - EPSS
- 0.3% chance of exploitation in the next 30 days; higher than 24% of CVEs (scores of 2026-10-25)
- CWEs
- CWE-78, CWE-306, CWE-352
- Published
- Modified
- Record from
- the NVD, synced
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-79wm-x847-7cvg | npm | claude-code-templates | <1.29.4 | 1.29.4 |
References
- https://github.com/davila7/claude-code-templates/blob/main/CHANGELOG.md
- https://github.com/davila7/claude-code-templates/commit/bc4618b07232633c1c0aac12a43e436268d31783
- https://github.com/davila7/claude-code-templates/security/advisories/GHSA-79wm-x847-7cvg
- https://github.com/davila7/claude-code-templates/security/advisories/GHSA-79wm-x847-7cvg