Supply-chain threat intelligence

Incident detail

criticalnpm·credential theft·osv

Malicious code in promptbook-mcp (npm)

promptbook-mcp

Risk score

92

AI summary

Indexed incident for promptbook-mcp (npm).

Description

dist/api.js contains a hardcoded URL (https://promts.newtechcompany.ru) referenced alongside process.env reads and a fetch() call at line 44. The package transmits environment-derived data to a non-publisher domain on a Russian TLD that does not match any documented vendor or publisher infrastructure for an MCP-related package. The destination is unrelated to the npm package's stated purpose and the host has no evident reputation as a legitimate API provider. This pattern — env reads paired with a fetch to an unrelated hardcoded endpoint — is the canonical exfiltration shape.

Technical details

Indicators

  • affected version<function fixed() { [native code] }75%

Timeline

  1. Advisory published
  2. Indexed by ThreatPkg

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