mal-2025-192852
Vulnerability from ossf_malicious_packages
Published
2025-12-23 08:24
Modified
2026-01-02 21:37
Summary
Malicious code in polyfill-corejs2 (npm)
Details

-= Per source details. Do not edit below this line.=-

Source: amazon-inspector (da972d0266a0a823fc38bb0bc6bf31a1d939a543c27322ece4ee07b11e36cf7b)

The package polyfill-corejs2 was found to contain malicious code.

Credits
Amazon Inspector actran@amazon.com
ReversingLabs www.reversinglabs.com
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "polyfill-corejs2",
        "purl": "pkg:npm/polyfill-corejs2"
      },
      "versions": [
        "8.9.0",
        "8.9.1"
      ]
    }
  ],
  "credits": [
    {
      "contact": [
        "actran@amazon.com"
      ],
      "name": "Amazon Inspector",
      "type": "FINDER"
    },
    {
      "contact": [
        "https://www.reversinglabs.com"
      ],
      "name": "ReversingLabs",
      "type": "FINDER"
    }
  ],
  "database_specific": {
    "malicious-packages-origins": [
      {
        "id": "RLMA-2025-06450",
        "import_time": "2025-12-24T10:07:26.655121274Z",
        "modified_time": "2025-12-23T08:24:47Z",
        "sha256": "d359e53d8e1d619f3e5b7ab1d604cf2e84cce3f772d93dd178177bd9e070632b",
        "source": "reversing-labs",
        "versions": [
          "8.9.0",
          "8.9.1"
        ]
      },
      {
        "import_time": "2026-01-02T21:35:52.953633636Z",
        "modified_time": "2026-01-02T21:29:26Z",
        "sha256": "da972d0266a0a823fc38bb0bc6bf31a1d939a543c27322ece4ee07b11e36cf7b",
        "source": "amazon-inspector",
        "versions": [
          "8.9.0",
          "8.9.1"
        ]
      }
    ]
  },
  "details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (da972d0266a0a823fc38bb0bc6bf31a1d939a543c27322ece4ee07b11e36cf7b)\nThe package polyfill-corejs2 was found to contain malicious code.\n",
  "id": "MAL-2025-192852",
  "modified": "2026-01-02T21:37:29Z",
  "published": "2025-12-23T08:24:47Z",
  "schema_version": "1.7.4",
  "summary": "Malicious code in polyfill-corejs2 (npm)"
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.