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
Summary
Claude Code Templates is a CLI tool with a critical vulnerability in versions before 1.29.4 where its Studio server binds to all network interfaces without authentication and allows attackers to execute arbitrary operating-system commands (running code on a system without permission) by sending specially crafted requests to the /api/execute or /api/install-agent endpoints. An attacker can exploit this by directly accessing the server or tricking a developer into visiting a malicious website, potentially stealing source code, credentials, and local data.
Solution / Mitigation
Update Claude Code Templates to version 1.29.4 or later, as this version fixes the vulnerability.
Vulnerability Details
8.8(high)
EPSS: 0.0%
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
network
low
none
required
August 11, 2026
Classification
Affected Vendors
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Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-73222
First tracked: August 11, 2026 at 08:08 PM
Classified by LLM (prompt v3) · confidence: 95%