
Claude Code Source Code Exposed via npm Source Map — Anthropic's Build Pipeline Mistake
🔄 Developing Story — Last updated: April 3, 2026 16:30 UTC. Deny-rule security bypass discovered and silently patched in v2.1.90. Trojanized leak repos spreading Vidar infostealer and GhostSocks malware. See Updates section below. Updates April 3, 2026 — 16:30 UTC Patch released; security bypass confirmed; malware campaign underway. First patched version: v2.1.90. Anthropic silently released Claude Code v2.1.90, fixing a security vulnerability disclosed by Adversa AI that was discovered directly through analysis of the leaked source. No public changelog or advisory was issued. Users still running v2.1.88 or any version below v2.1.90 should upgrade immediately. The original v2.1.88 package remains unpublished on npm. ...





