GitSpawn Attacks Target AI Coding Agents: CVE-2026-19592 Analysis
In September 2026, Manifold Security disclosed eight critical vulnerabilities across seven AI coding agents including Claude Code, Codex, and Cursor, where malicious Git configurations could execute attacker code without user approval. The flaws exploit the core.fsmonitor Git setting, allowing repository-supplied commands to run with full user privileges outside sandbox environments. Four vulnerabilities remained unpatched at publication, affecting popular development tools used by millions of developers worldwide. This incident highlights the growing security risks in AI-powered development environments as organizations increasingly adopt autonomous coding agents. With the rapid expansion of AI tooling in software development workflows, similar supply-chain attacks targeting developer infrastructure represent a critical emerging threat vector requiring immediate attention.
Kill Chain