EventCybersecurityOctober 22, 2026

OpenCode flaw lets malicious MCP servers run code on Windows, WSL

Read original source →thehackernews.com

Pillar Security rates it critical at 9.8/10: a hijacked MCP server's OAuth authorization endpoint was passed unescaped into a PowerShell command during sign-in. Anomaly fixed it in 1.18.33 on September 28 without a CVE or advisory, leaving 1.0.137–1.18.32 unflagged by scanners.

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