18 npm breach packages hijacked, 2 Billion downloads weekly

Łukasz Grochal

A widespread supply-chain attack has hit the npm ecosystem after attackers gained control of a prominent maintainer account and pushed malicious updates to 18 popular JavaScript packages. The compromised libraries together see about 2 billion weekly downloads, allowing the injected code to silently detect Web3 wallets in browsers and attempt to redirect cryptocurrency transactions to attacker-controlled addresses.

The breach began with a convincing phishing message that enabled a two-factor reset, letting the intruders publish poisoned versions before maintainers and security teams rolled back changes. The incident underlines how fragile open-source supply chains remain and renews calls for stricter account protections and provenance checks.

List of compromised npm packages

  • backslash – 0.26M weekly downloads
  • chalk-template – 3.9M weekly downloads
  • supports-hyperlinks – 19.2M weekly downloads
  • has-ansi – 12.1M weekly downloads
  • simple-swizzle – 26.26M weekly downloads
  • color-string – 27.48M weekly downloads
  • error-ex – 47.17M weekly downloads
  • color-name – 191.71M weekly downloads
  • is-arrayish – 73.8M weekly downloads
  • slice-ansi – 59.8M weekly downloads
  • color-convert – 193.5M weekly downloads
  • wrap-ansi – 197.99M weekly downloads
  • ansi-regex – 243.64M weekly downloads
  • supports-color – 287.1M weekly downloads
  • strip-ansi – 261.17M weekly downloads
  • chalk – 299.99M weekly downloads
  • debug – 357.6M weekly downloads
  • ansi-styles – 371.41M weekly downloads

  • ansi-regex 6.2.1
  • ansi-styles 6.2.2
  • backslash 0.2.1
  • chalk 5.6.1
  • chalk-template 1.1.1
  • color-convert 3.1.1
  • color-name 2.0.1
  • color-string 2.1.1
  • debug 4.4.2
  • error-ex 1.3.3
  • has-ansi 6.0.1
  • is-arrayish 0.3.3
  • simple-swizzle 0.2.3
  • slice-ansi 7.1.1
  • strip-ansi 7.1.1
  • supports-color 10.2.1
  • supports-hyperlinks 4.1.1
  • wrap-ansi 9.0.1
References
2 sources
01
csoonline.comCSO
02
bleepingcomputer.comBleeping Computer
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18 npm breach packages hijacked, 2 Billion downloads weekly | LucasGraphic