{
  "schema_version": "1.6.0",
  "id": "MAL-2026-11962",
  "modified": "2026-10-20T12:00:00Z",
  "published": "2026-10-20T12:00:00Z",
  "summary": "babel-plugin-linaria-css-to-undefined — malicious npm package (Shai-Hulud worm), independently detected and OSV-corroborated",
  "details": "babel-plugin-linaria-css-to-undefined is a malicious npm package that codelake Research independently detected during automated supply-chain scanning, corroborated by MAL-2026-11962 in OSV. It was compromised by the Shai-Hulud self-replicating npm worm, which steals developer and cloud credentials on install and propagates through stolen publish tokens.",
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "babel-plugin-linaria-css-to-undefined"
      },
      "versions": [
        "0.3.17"
      ]
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://research.codelake.dev/advisories/clr-2026-3501-babel-plugin-linaria-css-to-undefined"
    },
    {
      "type": "ADVISORY",
      "url": "https://osv.dev/vulnerability/MAL-2026-11962"
    }
  ],
  "credits": [
    {
      "name": "Sascha Klein, codelake Research",
      "type": "FINDER",
      "contact": [
        "https://research.codelake.dev"
      ]
    }
  ],
  "database_specific": {
    "caseId": "CLR-2026-3501",
    "kind": "malware",
    "class": "Malware",
    "severity": "Critical",
    "status": "Malicious package — independently detected",
    "iocs": {
      "ips": [],
      "hashes": [],
      "indicators": [
        "babel-plugin-linaria-css-to-undefined — npm, 1 affected version(s)",
        "Affected versions: 0.3.17",
        "Detection signal: shai-hulud,worm,wiz-cross-verified,dynamic-exec",
        "Shai-Hulud worm payload — dynamic execution on install",
        "Secret harvesting: npm/GitHub tokens, AWS/GCP/Azure credentials (TruffleHog-style)",
        "Self-propagation via stolen npm publish tokens",
        "MAL-2026-11962 — corroborating OSV malicious record (osv.dev/vulnerability/MAL-2026-11962)"
      ]
    }
  }
}