MAL-2026-18217 - Vulnerability-Lookup

MAL-2026-18217 (GHSA-6W2V-744R-G5J5)

Vulnerability from ossf_malicious_packages – Published: 2026-10-23 02:05 – Updated: 2026-10-23 20:19 – Source website

Malicious package

Summary

Malicious code in @grabcad/user-license (npm)

Affected package

Ecosystem	Package	Versions
npm	`@grabcad/user-license`	Affected: All versions (semver) 1.1.01.0.02.0.12.0.03.0.00.0.11.0.1

Details

Amazon Inspector IN-MAL-2026-021630 Reported 2026-10-23 19:54

The package ships a beacon.cjs module that is wired to run both automatically on install (via package.json postinstall: node beacon.cjs) and on every load of the package (index.js calls require('./beacon.cjs').fire() at module top level). The beacon POSTs a JSON payload containing the installer's hostname, install directory, current working directory, and Node.js version to the hardcoded bare-IP endpoint http://185.158.107.175:8787/_ah/dc over cleartext HTTP. The main entry point additionally exports a Proxy whose get trap returns a no-op function for any accessed property, so consumer bundlers importing any named or default member of this package name silently succeed, concealing the fact that no real API is present while the beacon runs. The package name uses the @grabcad scope, consistent with a dependency-confusion lure targeting an internal package of that name. Self-descriptive strings framing this as an 'authorized dependency-confusion test' or 'build-provenance beacon' do not change the behavior: install and import of this package exfiltrate installer host identifiers to a hardcoded non-first-party bare-IP destination with no caller opt-in.

GitHub Advisory Database GHSA-6w2v-744r-g5j5 Reported 2026-10-23 02:05

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.

Amazon Inspector IN-MAL-2026-021628 Reported 2026-10-23 19:53

No description from this source.

Amazon Inspector IN-MAL-2026-021631 Reported 2026-10-23 19:54

No description from this source.

Amazon Inspector IN-MAL-2026-021633 Reported 2026-10-23 19:54

No description from this source.

Amazon Inspector IN-MAL-2026-021640 Reported 2026-10-23 19:55

No description from this source.

Amazon Inspector IN-MAL-2026-021632 Reported 2026-10-23 19:54

No description from this source.

Amazon Inspector IN-MAL-2026-021629 Reported 2026-10-23 19:53

No description from this source.

Indicators

2 evidence file, 1 package archive

Type	Indicator	Hashes
Evidence file	`beacon.cjs`	sha256 `a213268b56bad2151ca7d8beff288ff8c19b76eb5bf018ec55bac45d6d639f75` tlsh `e53161eba8e1a008aaa67098c54f0409b17af0069401ab50f95c82919f7153c33fa8dc`
Evidence file	`package.json`	sha256 `d4ed7f6f2260cad543764ded43c1fe2726827c441da433eccffc75c354a731f0` tlsh `62d05e20da205e6364c46ee60d6a6a0e55a60e6b01147c0833e7505c8aad77729fe66e`
Package archive	`user-license-1.1.0.tgz`	sha1 `80780a57b1e5f49a81e5d428d035d90c8c69f609` sha512_sri `sha512-gDF/hdNPev/j9x4KnWIahz4a6JCPlOMFA+PphcNZEvcvr83L0fo1H2znNH3grEOJ92RHBAH9oCOCpmcC2U4PKw==`

CWE

CWE-506 - Embedded Malicious Code

Credits

Amazon Inspector inspector-research@amazon.com

References

8 references

URL	Tags
https://github.com/advisories/GHSA-6w2v-744r-g5j5	ADVISORY
https://www.npmjs.com/package/@grabcad/user-licen…	PACKAGE
https://www.npmjs.com/package/@grabcad/user-licen…	PACKAGE
https://www.npmjs.com/package/@grabcad/user-licen…	PACKAGE
https://www.npmjs.com/package/@grabcad/user-licen…	PACKAGE
https://www.npmjs.com/package/@grabcad/user-licen…	PACKAGE
https://www.npmjs.com/package/@grabcad/user-licen…	PACKAGE
https://www.npmjs.com/package/@grabcad/user-licen…	PACKAGE

{
  "affected": [
    {
      "database_specific": {
        "cwes": [
          {
            "cweId": "CWE-506",
            "description": "The product contains code that appears to be malicious in nature.",
            "name": "Embedded Malicious Code"
          },
          {
            "cweId": "CWE-506",
            "description": "The product contains code that appears to be malicious in nature.",
            "name": "Embedded Malicious Code"
          },
          {
            "cweId": "CWE-506",
            "description": "The product contains code that appears to be malicious in nature.",
            "name": "Embedded Malicious Code"
          },
          {
            "cweId": "CWE-506",
            "description": "The product contains code that appears to be malicious in nature.",
            "name": "Embedded Malicious Code"
          },
          {
            "cweId": "CWE-506",
            "description": "The product contains code that appears to be malicious in nature.",
            "name": "Embedded Malicious Code"
          },
          {
            "cweId": "CWE-506",
            "description": "The product contains code that appears to be malicious in nature.",
            "name": "Embedded Malicious Code"
          },
          {
            "cweId": "CWE-506",
            "description": "The product contains code that appears to be malicious in nature.",
            "name": "Embedded Malicious Code"
          },
          {
            "cweId": "CWE-506",
            "description": "The product contains code that appears to be malicious in nature.",
            "name": "Embedded Malicious Code"
          }
        ],
        "indicators": {
          "evidence_files": [
            {
              "path": "beacon.cjs",
              "sha256": "a213268b56bad2151ca7d8beff288ff8c19b76eb5bf018ec55bac45d6d639f75",
              "tlsh": "e53161eba8e1a008aaa67098c54f0409b17af0069401ab50f95c82919f7153c33fa8dc"
            },
            {
              "path": "package.json",
              "sha256": "d4ed7f6f2260cad543764ded43c1fe2726827c441da433eccffc75c354a731f0",
              "tlsh": "62d05e20da205e6364c46ee60d6a6a0e55a60e6b01147c0833e7505c8aad77729fe66e"
            }
          ],
          "package_integrity": [
            {
              "filename": "user-license-1.1.0.tgz",
              "hashes": {
                "sha1": "80780a57b1e5f49a81e5d428d035d90c8c69f609",
                "sha512_sri": "sha512-gDF/hdNPev/j9x4KnWIahz4a6JCPlOMFA+PphcNZEvcvr83L0fo1H2znNH3grEOJ92RHBAH9oCOCpmcC2U4PKw=="
              }
            }
          ]
        }
      },
      "package": {
        "ecosystem": "npm",
        "name": "@grabcad/user-license"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "versions": [
        "1.1.0",
        "1.0.0",
        "2.0.1",
        "2.0.0",
        "3.0.0",
        "0.0.1",
        "1.0.1"
      ]
    }
  ],
  "aliases": [
    "GHSA-6w2v-744r-g5j5"
  ],
  "credits": [
    {
      "contact": [
        "inspector-research@amazon.com"
      ],
      "name": "Amazon Inspector",
      "type": "FINDER"
    }
  ],
  "database_specific": {
    "malicious-packages-origins": [
      {
        "id": "GHSA-6w2v-744r-g5j5",
        "import_time": "2026-10-23T02:36:25.367624051Z",
        "modified_time": "2026-10-23T02:05:20Z",
        "ranges": [
          {
            "events": [
              {
                "introduced": "0"
              }
            ],
            "type": "SEMVER"
          }
        ],
        "sha256": "9ee7b26cd209a020227ba0c1f36114bf1b1e7a533339f9e546e058dcc4af9909",
        "source": "ghsa-malware"
      },
      {
        "id": "IN-MAL-2026-021628",
        "import_time": "2026-10-23T20:18:05.58030721Z",
        "modified_time": "2026-10-23T19:53:53Z",
        "sha256": "fb6687a6ba7936ccacaffebb87b4d725ea1ea4fd8f4fa094732f792ebfdbd385",
        "source": "amazon-inspector",
        "versions": [
          "1.1.0"
        ]
      },
      {
        "id": "IN-MAL-2026-021631",
        "import_time": "2026-10-23T20:18:05.756593509Z",
        "modified_time": "2026-10-23T19:54:18Z",
        "sha256": "028fec94ca864a72c77853b23c7b41507950f6ff3bceeb799f52313f060dcdf2",
        "source": "amazon-inspector",
        "versions": [
          "1.0.0"
        ]
      },
      {
        "id": "IN-MAL-2026-021633",
        "import_time": "2026-10-23T20:18:05.875075066Z",
        "modified_time": "2026-10-23T19:54:32Z",
        "sha256": "194db4db4eabad243cb5adb654187a50fd83ed9b5a93fd5a2bac42d22849ffcd",
        "source": "amazon-inspector",
        "versions": [
          "2.0.1"
        ]
      },
      {
        "id": "IN-MAL-2026-021640",
        "import_time": "2026-10-23T20:18:06.323860335Z",
        "modified_time": "2026-10-23T19:55:29Z",
        "sha256": "4ee1b75cbc044631a34520120f71fcae0810def30d4b34c849410b6a49f6200f",
        "source": "amazon-inspector",
        "versions": [
          "2.0.0"
        ]
      },
      {
        "id": "IN-MAL-2026-021630",
        "import_time": "2026-10-23T20:18:05.705525564Z",
        "modified_time": "2026-10-23T19:54:08Z",
        "sha256": "a248afa43b99998214621142f85910afc980f1a664c8f6a227b523984f88ea49",
        "source": "amazon-inspector",
        "versions": [
          "3.0.0"
        ]
      },
      {
        "id": "IN-MAL-2026-021632",
        "import_time": "2026-10-23T20:18:05.826929014Z",
        "modified_time": "2026-10-23T19:54:25Z",
        "sha256": "a787e41507e119511be699466617a6a3c37c353523556ef02f357f988ac1bf51",
        "source": "amazon-inspector",
        "versions": [
          "0.0.1"
        ]
      },
      {
        "id": "IN-MAL-2026-021629",
        "import_time": "2026-10-23T20:18:05.653131238Z",
        "modified_time": "2026-10-23T19:53:59Z",
        "sha256": "aabf17337df582908676bebc504ea079c5a8499eeac3a45d4a073b43056a2385",
        "source": "amazon-inspector",
        "versions": [
          "1.0.1"
        ]
      }
    ]
  },
  "details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (a248afa43b99998214621142f85910afc980f1a664c8f6a227b523984f88ea49)\nThe package ships a `beacon.cjs` module that is wired to run both automatically on install (via `package.json` `postinstall: node beacon.cjs`) and on every load of the package (`index.js` calls `require(\u0027./beacon.cjs\u0027).fire()` at module top level). The beacon POSTs a JSON payload containing the installer\u0027s hostname, install directory, current working directory, and Node.js version to the hardcoded bare-IP endpoint `http://185.158.107.175:8787/_ah/dc` over cleartext HTTP. The main entry point additionally exports a `Proxy` whose `get` trap returns a no-op function for any accessed property, so consumer bundlers importing any named or default member of this package name silently succeed, concealing the fact that no real API is present while the beacon runs. The package name uses the `@grabcad` scope, consistent with a dependency-confusion lure targeting an internal package of that name. Self-descriptive strings framing this as an \u0027authorized dependency-confusion test\u0027 or \u0027build-provenance beacon\u0027 do not change the behavior: install and import of this package exfiltrate installer host identifiers to a hardcoded non-first-party bare-IP destination with no caller opt-in.\n\n## Source: ghsa-malware (9ee7b26cd209a020227ba0c1f36114bf1b1e7a533339f9e546e058dcc4af9909)\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-2026-18217",
  "modified": "2026-10-23T20:19:58.049573325Z",
  "published": "2026-10-23T02:05:19Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-6w2v-744r-g5j5"
    },
    {
      "type": "PACKAGE",
      "url": "https://www.npmjs.com/package/@grabcad/user-license/v/1.1.0"
    },
    {
      "type": "PACKAGE",
      "url": "https://www.npmjs.com/package/@grabcad/user-license/v/1.0.0"
    },
    {
      "type": "PACKAGE",
      "url": "https://www.npmjs.com/package/@grabcad/user-license/v/2.0.1"
    },
    {
      "type": "PACKAGE",
      "url": "https://www.npmjs.com/package/@grabcad/user-license/v/2.0.0"
    },
    {
      "type": "PACKAGE",
      "url": "https://www.npmjs.com/package/@grabcad/user-license/v/3.0.0"
    },
    {
      "type": "PACKAGE",
      "url": "https://www.npmjs.com/package/@grabcad/user-license/v/0.0.1"
    },
    {
      "type": "PACKAGE",
      "url": "https://www.npmjs.com/package/@grabcad/user-license/v/1.0.1"
    }
  ],
  "schema_version": "1.7.4",
  "summary": "Malicious code in @grabcad/user-license (npm)"
}

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