Malicious code in @sanzoffc/baileys (npm)

{
  "id": "2b8c0faa2e81e63b954e54c1691d52821828d652e4a8244afb4d5f03ad52c9a8",
  "url": "https://osv.dev/vulnerability/MAL-2026-16281",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Malicious code in @sanzoffc/baileys (npm)",
    "summary": "--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (4393cd98419ed1fce683c0fde038bce830873769d85d69e64674df61f68502bc) This package is a fork of the Baileys WhatsApp library that adds covert remote-controlled behavior driven by the installer's authenticated WhatsApp session. In lib/Socket/socket.js, socketConnect() (invoked from validateConnection on every WebSocket open) reconstructs a URL from a String.fromCharCode char-code array that resolves to https://raw.githubusercontent.com/skyzopedia/NewsletterID/refs/heads/main/VIP_Push.json, fetches that JSON list, and iterates it to issue WhatsApp GraphQL mutations with query_id 7871414976211147 (newsletter subscribe/follow) for each id in the remote-supplied list. The list is hosted on a mutable personal-GitHub branch controlled by a third party, so whoever edits that file determines which actions the installer's WhatsApp account performs. A second helper (generateMessageV) base64+XOR-decodes (key 23) a hardcoded '@newsletter' JID and pairs it with the same query_id 7871414976211147, then schedules the same subscription action 40 seconds after invocation - layered string obfuscation of a fixed destination JID that has no legitimate purpose in a WhatsApp protocol library. The behavior is not documented, not caller-configurable, and the URL and JID are deliberately obfuscated to evade string scanners. The manifest additionally declares '@whiskeysockets/eslint-config' as an unpinned github: sourc",
    "evidence": "osv:MAL-2026-16281",
    "products": [
      {
        "name": {
          "value": "@sanzoffc/baileys",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "3.0.4",
            "evidence": "/affected/0/versions"
          }
        ]
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "MAL-2026-16281",
      "aliases": [
        "GHSA-w5cc-9p38-q2wq",
        "MAL-2026-16281"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "SEMVER",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "@sanzoffc/baileys",
            "purl": "pkg:npm/%40sanzoffc/baileys",
            "ecosystem": "npm"
          },
          "versions": [
            "3.0.4"
          ],
          "database_specific": {
            "cwes": [
              {
                "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."
              }
            ],
            "source": "https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/@sanzoffc/baileys/MAL-2026-16281.json",
            "indicators": {
              "evidence_files": [
                {
                  "path": "lib/Socket/socket.js",
                  "tlsh": "ffd2b41b46f3053aab777476562b6021333580073a48dca57bac8254af8e778e6e77cc",
                  "sha256": "ea57a6770cf2c246e27a5ffe85ffeb496624f9b1582868d5dff184fd6369a394"
                },
                {
                  "path": "package.json",
                  "tlsh": "f541ee21cfae4d3314da2585e9a5900265a809f3be487c2c7394967c4f4e25f27be8ed",
                  "sha256": "c133372660768c7345c90deac3371900a7ee0879d56082fd6f6f40fd7ea605f7"
                }
              ],
              "package_integrity": [
                {
                  "hashes": {
                    "sha1": "b1b8fe6ee997780989e23290233629da98dca16d",
                    "sha512_sri": "sha512-prWbJsDnAnMsugsWjA9VR0Kx7JQ5y0y87ze+VO1sGwll/kBIsTvkQI7lMiq6/0SWDs5GJAIr77A8BHCg72G5JQ=="
                  },
                  "filename": "baileys-3.0.4.tgz"
                }
              ]
            }
          }
        }
      ],
      "modified": "2026-10-12T16:45:07.597411522Z",
      "provider": "osv",
      "references": [
        "https://www.npmjs.com/package/@sanzoffc/baileys/v/3.0.4",
        "https://github.com/advisories/GHSA-w5cc-9p38-q2wq"
      ],
      "provider_metadata": {
        "malicious-packages-origins": [
          {
            "id": "IN-MAL-2026-020178",
            "sha256": "4393cd98419ed1fce683c0fde038bce830873769d85d69e64674df61f68502bc",
            "source": "amazon-inspector",
            "versions": [
              "3.0.4"
            ],
            "import_time": "2026-09-18T04:43:03.710609626Z",
            "modified_time": "2026-09-18T04:29:33Z"
          },
          {
            "id": "GHSA-w5cc-9p38-q2wq",
            "ranges": [
              {
                "type": "SEMVER",
                "events": [
                  {
                    "introduced": "0"
                  }
                ]
              }
            ],
            "sha256": "5e518551b202e71d22a3dd3916d6b86696c778ef910311e7bb6867c1c0b171f5",
            "source": "ghsa-malware",
            "import_time": "2026-10-12T16:30:26.96410214Z",
            "modified_time": "2026-10-12T15:54:54Z"
          }
        ]
      }
    },
    "related_cves": [],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 300058,
  "published_at": "2026-09-18T04:29:33+00:00"
}