Supply-chain threat intelligence

Incident detail

criticalnpm·typosquatting·osv

Malicious code in eslint-helper-1 (npm)

eslint-helper-1

Risk score

92

AI summary

Indexed incident for eslint-helper-1 (npm).

Description

Package masquerades as an ESLint helper but contains code in index.js that decodes base64 blobs through Buffer.from(..., 'base64').toString() and pipes the resulting strings into execSync('bash...') and execSync('zsh...'). This is the canonical obfuscated-shell-dropper shape: hidden payload bytes are reconstituted at runtime and handed to a shell interpreter, giving the author arbitrary command execution on the installer's machine. The name (eslint-helper-1) and lack of any legitimate ESLint integration are consistent with a typosquat / brand-impersonation lure for a credential-stealing or remote-execution payload.

Technical details

Affected versions

=5.0.4

Indicators

  • affected version=5.0.475%

Timeline

  1. Advisory published
  2. Indexed by ThreatPkg

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