OpenCode flaw lets malicious MCP servers run PowerShell code during OAuth sign-in on Windows/WSL; silently fixed in 1.18.33, no CVE
Pillar Security researcher Eilon Cohen disclosed on October 19, 2026 a critical command-injection flaw in the open-source AI coding agent OpenCode (developed by Anomaly). It affects versions 1.0.137 through 1.18.32 on Windows and WSL. A malicious or hijacked remote MCP server can execute code with the developer's own privileges during MCP…