{"id":"CVE-2026-73222","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-73222","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…","details":"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.","published":"2026-08-11T19:18:51.720","modified":"2026-08-11T19:18:51.720","cvss":{"score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":{"url":"https://github.com/davila7/claude-code-templates/commit/bc4618b07232633c1c0aac12a43e436268d31783","label":"davila7/claude-code-templates@bc4618b"},"references":[{"type":"WEB","url":"https://github.com/davila7/claude-code-templates/blob/main/CHANGELOG.md"},{"type":"WEB","url":"https://github.com/davila7/claude-code-templates/commit/bc4618b07232633c1c0aac12a43e436268d31783"},{"type":"WEB","url":"https://github.com/davila7/claude-code-templates/security/advisories/GHSA-79wm-x847-7cvg"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-08-11T19:18:51.720"}}