ossf_malicious_packages - mal-2025-46968

mal-2025-46968

Vulnerability from ossf_malicious_packages

Published

2025-09-08 15:18

Modified

2025-09-12 01:13

Summary

Malicious code in backslash (npm)

Details

The package was compromised and malicious code added.

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

Source: ghsa-malware (6e028d39ee4bd2bd3a487f4ad116e77bf1582cc08b41fb26fb56f8f83049f90f)

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.

CWE

CWE-506 - The product contains code that appears to be malicious in nature.

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "cwes": [
          {
            "cweId": "CWE-506",
            "description": "The product contains code that appears to be malicious in nature.",
            "name": "Embedded Malicious Code"
          }
        ]
      },
      "package": {
        "ecosystem": "npm",
        "name": "backslash"
      },
      "versions": [
        "0.2.1"
      ]
    }
  ],
  "aliases": [
    "GHSA-m2xf-jp99-f298",
    "GHSA-53mq-f4w3-f7qv"
  ],
  "credits": [
    {
      "contact": [
        "actran@amazon.com"
      ],
      "name": "Amazon Inspector",
      "type": "FINDER"
    }
  ],
  "database_specific": {
    "malicious-packages-origins": [
      {
        "id": "GHSA-m2xf-jp99-f298",
        "import_time": "2025-09-09T00:35:48.414763961Z",
        "modified_time": "2025-09-08T17:57:02Z",
        "sha256": "6e028d39ee4bd2bd3a487f4ad116e77bf1582cc08b41fb26fb56f8f83049f90f",
        "source": "ghsa-malware",
        "versions": [
          "0.2.1"
        ]
      },
      {
        "id": "GHSA-m2xf-jp99-f298",
        "import_time": "2025-09-10T00:34:05.228472358Z",
        "modified_time": "2025-09-08T17:57:02Z",
        "sha256": "13ec805bec52e1cdc50e1b43540ffbe03a49208e2b632dcd845ec8bb24ecc7a2",
        "source": "ghsa-malware",
        "versions": [
          "0.2.1"
        ]
      },
      {
        "id": "GHSA-m2xf-jp99-f298",
        "import_time": "2025-09-11T00:34:35.474703153Z",
        "modified_time": "2025-09-10T17:49:53Z",
        "sha256": "671e1d54b1d52e439f789616a689b5aceda9cb5a0aa790b802ea0a07ff955093",
        "source": "ghsa-malware",
        "versions": [
          "0.2.1"
        ]
      },
      {
        "id": "GHSA-m2xf-jp99-f298",
        "import_time": "2025-09-12T00:33:58.085358405Z",
        "modified_time": "2025-09-10T17:49:53Z",
        "sha256": "be788a9f8066c5e1a34120e8c9a7dff30154593b1bc4ff3b43017d9df7533d05",
        "source": "ghsa-malware",
        "versions": [
          "0.2.1"
        ]
      },
      {
        "id": "GHSA-m2xf-jp99-f298",
        "import_time": "2025-09-16T00:34:25.638043108Z",
        "modified_time": "2025-09-15T23:51:46Z",
        "sha256": "3061a4da6324dfa1bcfce198e3b1785a80e6bd4763a4ad4e98fa09cbc9ad5e0d",
        "source": "ghsa-malware",
        "versions": [
          "0.2.1"
        ]
      },
      {
        "id": "GHSA-m2xf-jp99-f298",
        "import_time": "2025-09-17T00:07:09.3451175Z",
        "modified_time": "2025-09-15T23:51:46Z",
        "sha256": "4cf254f753d3203d5b21ef918f6a2040e9871e94c5702921d49f75e0e2a5d888",
        "source": "ghsa-malware",
        "versions": [
          "0.2.1"
        ]
      },
      {
        "id": "GHSA-m2xf-jp99-f298",
        "import_time": "2025-09-17T00:34:59.197952106Z",
        "modified_time": "2025-09-15T23:51:46Z",
        "sha256": "59344e5196fc61bb065ff6873a5142e6f552933fc7e9a283dd87f93a8e57a97b",
        "source": "ghsa-malware",
        "versions": [
          "0.2.1"
        ]
      }
    ]
  },
  "details": "The package was compromised and malicious code added.\n\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: ghsa-malware (6e028d39ee4bd2bd3a487f4ad116e77bf1582cc08b41fb26fb56f8f83049f90f)\nAny computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.\n",
  "id": "MAL-2025-46968",
  "modified": "2025-09-12T01:13:34Z",
  "published": "2025-09-08T15:18:29Z",
  "references": [
    {
      "type": "ARTICLE",
      "url": "https://www.aikido.dev/blog/npm-debug-and-chalk-packages-compromised"
    },
    {
      "type": "ARTICLE",
      "url": "https://www.bleepingcomputer.com/news/security/hackers-hijack-npm-packages-with-2-billion-weekly-downloads-in-supply-chain-attack/"
    },
    {
      "type": "WEB",
      "url": "https://github.com/github/advisory-database/issues/6099"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-m2xf-jp99-f298"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Qix-/node-backslash/security/advisories/GHSA-53mq-f4w3-f7qv"
    }
  ],
  "schema_version": "1.5.0",
  "summary": "Malicious code in backslash (npm)"
}

ghsa-53mq-f4w3-f7qv

Vulnerability from github

Published

2025-09-15 21:21

Modified

2025-09-15 21:58

Severity ?

8.8 (High) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N/E:A/U:Red

Summary

backslash@0.2.1 contains malware after npm account takeover

Details

Impact

On 8 September 2025, the npm publishing account for backslash was taken over after a phishing attack. Version 0.2.1 was published, functionally identical to the previous patch version, but with a malware payload added attempting to redirect cryptocurrency transactions to the attacker's own addresses from within browser environments.

Local environments, server environments, command line applications, etc. are not affected. If the package was used in a browser context (e.g. a direct <script> inclusion, or via a bundling tool such as Babel, Rollup, Vite, Next.js, etc.) there is a chance the malware still exists and such bundles will need to be rebuilt.

The malware seemingly only targets cryptocurrency transactions and wallets such as MetaMask. See references below for more information on the payload.

Patches

npm removed the offending package from the registry over the course of the day on 8 September, preventing further downloads from npm proper.

On 13 September, the package owner published new patch versions to help cache-bust those using private registries who might still have the compromised version cached. This version is functionally identical to the previously known-good version, published as a patch version bump above the compromised version.

Users should upgrade to the latest patch version, completely remove their node_modules directory, clean their package manager's global cache, and rebuild any browser bundles from scratch.

Those operating private registries or registry mirrors should purge the offending versions from any caches.

References

https://www.aikido.dev/blog/npm-debug-and-chalk-packages-compromised
https://socket.dev/blog/npm-author-qix-compromised-in-major-supply-chain-attack
https://www.ox.security/blog/npm-packages-compromised/

Point of Contact

In the event suspicious behavior is still observed for the package listed in this security advisory after performing all of the above cleaning operations (see Patches above), please reach out via one of the following channels of communication:

Bluesky, package owner: https://bsky.app/profile/bad-at-computer.bsky.social
debug repository, tracking issue (applies to all packages affected in the breach): https://github.com/debug-js/debug/issues/1005

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