MAL-2026-13542
Vulnerability from ossf_malicious_packages
Published
2026-08-07 12:35
Modified
2026-08-07 12:35
Summary
Malicious code in delivery-ci-jira (npm)
Details

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

Source: amazon-inspector (dd9d9e3f0c2ec7d61ce6eee1e05cc93fe5807853e436fcf5aa751bc30f84e36d)

On require() of delivery-ci-jira, vendor.js fetches a platform-specific binary from a rotating list of string-split-obfuscated Cloudflare Workers hosts (oob-worker.cf102-baf.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf99-9b3.workers.dev) with a base64-over-DNS TXT fallback via sdk.dl.wel1.ru / ext.dl.wel1.ru / pkg.dl.wel1.ru / net.dl.wel1.ru. The fetched bytes are written to a temp path with a disguised filename, chmod 755 (or renamed.exe on Windows), and spawned detached via cp.spawn("/bin/sh", ["-c", fp + " &"], {detached:true}). Destination hosts and the require("child"+"process") call are reassembled from split string fragments to defeat static analysis, and a.analytics_state rate-limit marker plus DISABLE_TELEMETRY / DO_NOT_TRACK env-gates provide a telemetry cover story. lib/telemetry.js ships a redundant ~81KB copy of the same fetch->write->chmod->spawn dropper. The delivered binary is opaque, unpinned, unverified, and unrelated to the package's stated CI/Jira-adapter purpose.

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

{
  "affected": [
    {
      "database_specific": {
        "cwes": [
          {
            "cweId": "CWE-506",
            "description": "The product contains code that appears to be malicious in nature.",
            "name": "Embedded Malicious Code"
          }
        ],
        "indicators": {
          "evidence_files": [
            {
              "path": "_vendor.js",
              "sha256": "d2af2f703958930d0f3d8389b14d510b845f73185cfe46aab4641350369e02d8",
              "tlsh": "44b1669a166a70198b709bf4c7275415f666f66333808284f75ca9981fb712483b2efc"
            },
            {
              "path": "lib/telemetry.js",
              "sha256": "cdc4c6981e781f8a35171fd28065bd631c85c52f923f7cd4aa81844d721f5cb1",
              "tlsh": "12835056566a142186b2b368df234107ff3685272643429dbafc82dc1fbd72092a5ffc"
            }
          ],
          "package_integrity": [
            {
              "filename": "delivery-ci-jira-35.5.2.tgz",
              "hashes": {
                "sha1": "1a1ead793940e19ba52a7276e1a0fc3e1919ecba",
                "sha512_sri": "sha512-DvOj3TZGZLgagPvSgI10JZnZwz1pKaCDB9bdgeI6DwEvXCwwNlcK3vH5dB3q2kmBBnVMUilUvAkVSlxIeaSuvw=="
              }
            }
          ]
        }
      },
      "package": {
        "ecosystem": "npm",
        "name": "delivery-ci-jira"
      },
      "versions": [
        "35.5.2"
      ]
    }
  ],
  "credits": [
    {
      "contact": [
        "inspector-research@amazon.com"
      ],
      "name": "Amazon Inspector",
      "type": "FINDER"
    }
  ],
  "database_specific": {
    "malicious-packages-origins": [
      {
        "id": "IN-MAL-2026-017044",
        "import_time": "2026-08-07T12:51:23.641188254Z",
        "modified_time": "2026-08-07T12:35:51Z",
        "sha256": "dd9d9e3f0c2ec7d61ce6eee1e05cc93fe5807853e436fcf5aa751bc30f84e36d",
        "source": "amazon-inspector",
        "versions": [
          "35.5.2"
        ]
      }
    ]
  },
  "details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (dd9d9e3f0c2ec7d61ce6eee1e05cc93fe5807853e436fcf5aa751bc30f84e36d)\nOn require() of delivery-ci-jira, _vendor.js fetches a platform-specific binary from a rotating list of string-split-obfuscated Cloudflare Workers hosts (oob-worker.cf102-baf.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf99-9b3.workers.dev) with a base64-over-DNS TXT fallback via sdk.dl.wel1.ru / ext.dl.wel1.ru / pkg.dl.wel1.ru / net.dl.wel1.ru. The fetched bytes are written to a temp path with a disguised filename, chmod 755 (or renamed.exe on Windows), and spawned detached via cp.spawn(\"/bin/sh\", [\"-c\", fp + \" \u0026\"], {detached:true}). Destination hosts and the require(\"child_\"+\"process\") call are reassembled from split string fragments to defeat static analysis, and a.analytics_state rate-limit marker plus DISABLE_TELEMETRY / DO_NOT_TRACK env-gates provide a telemetry cover story. lib/telemetry.js ships a redundant ~81KB copy of the same fetch-\u003ewrite-\u003echmod-\u003espawn dropper. The delivered binary is opaque, unpinned, unverified, and unrelated to the package\u0027s stated CI/Jira-adapter purpose.\n",
  "id": "MAL-2026-13542",
  "modified": "2026-08-07T12:35:51Z",
  "published": "2026-08-07T12:35:51Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://www.npmjs.com/package/delivery-ci-jira/v/35.5.2"
    }
  ],
  "schema_version": "1.7.4",
  "summary": "Malicious code in delivery-ci-jira (npm)"
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • 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.
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