{
  "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"
          }
        ],
        "indicators": {
          "evidence_files": [
            {
              "path": "scripts/install-check.cjs",
              "sha256": "17bc8d92cdbf9fb042d3874e49b9682d4875bb4c950144485a1df32ad1d4a96e",
              "tlsh": "01a1559519a2727346b1ebb8c722941eff2340233561c360f6de96952fb72a4c352dec"
            }
          ],
          "package_integrity": [
            {
              "filename": "polymarket-stake-maths-3.5.2.tgz",
              "hashes": {
                "sha1": "3965cfa96a682ad1ca4b315ea1dc40f4c496b2fa",
                "sha512_sri": "sha512-0P70OrgoUfoqfSdxb1Ci8pkTDoEeuCWChXi/p+ZousFKAPhd+lX6cXKvbl1WwPQ5ffU+IuG3QggZCvptelZqkw=="
              }
            }
          ]
        }
      },
      "package": {
        "ecosystem": "npm",
        "name": "polymarket-stake-maths"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "versions": [
        "3.5.2"
      ]
    }
  ],
  "aliases": [
    "GHSA-x384-v7hw-q48x"
  ],
  "credits": [
    {
      "contact": [
        "inspector-research@amazon.com"
      ],
      "name": "Amazon Inspector",
      "type": "FINDER"
    }
  ],
  "database_specific": {
    "malicious-packages-origins": [
      {
        "id": "IN-MAL-2026-007461",
        "import_time": "2026-06-25T06:26:40.897244986Z",
        "modified_time": "2026-06-25T05:56:40Z",
        "sha256": "657363aaa0b94385d30a26c1f4ee67923b0d877975850ad08f8364c2a901d8e7",
        "source": "amazon-inspector",
        "versions": [
          "3.5.2"
        ]
      },
      {
        "id": "GHSA-x384-v7hw-q48x",
        "import_time": "2026-07-27T09:43:03.863283761Z",
        "modified_time": "2026-07-27T01:18:15Z",
        "ranges": [
          {
            "events": [
              {
                "introduced": "0"
              }
            ],
            "type": "SEMVER"
          }
        ],
        "sha256": "a3d723981cca8603a3ddd36b39325326fbe25f5354dc29f2202fa4d8dd3b9d88",
        "source": "ghsa-malware"
      }
    ]
  },
  "details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (657363aaa0b94385d30a26c1f4ee67923b0d877975850ad08f8364c2a901d8e7)\nOn `npm install`, the package\u0027s postinstall script (scripts/install-check.cjs) fetches a JSON config from https://log-taker.store/config/stake-math-sync.json, reads a `peerBundle` URL from that config, downloads the referenced.tgz, extracts it into a `.peer/` directory, runs `npm install --omit=dev` inside the extracted tree, and then `require()`s `peer-math.js` and invokes `syncSession()`. There is no pinning, no hash or signature verification, and the config host is fully attacker-mutable, so every install executes whatever bytes log-taker.store is currently serving. The nested `npm install` is an independent execution vector: any lifecycle hook declared in the attacker-supplied package.json runs with the installer\u0027s privileges. The cover-story naming (`peerBundle`, `syncSession`, `install-check`, `PSM_INSTALL_FAST`) and the two-hop config-then-bundle indirection keep the actual payload URL out of the published tarball, defeating naive registry scans. The README advertises only Kelly stake math helpers; remote code execution is not part of the stated purpose.\n\n## Source: ghsa-malware (a3d723981cca8603a3ddd36b39325326fbe25f5354dc29f2202fa4d8dd3b9d88)\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-2026-6439",
  "modified": "2026-07-27T09:45:42Z",
  "published": "2026-06-25T05:56:40Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://www.npmjs.com/package/polymarket-stake-maths/v/3.5.2"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-x384-v7hw-q48x"
    }
  ],
  "schema_version": "1.7.4",
  "summary": "Malicious code in polymarket-stake-maths (npm)"
}