mal-2026-3182
Vulnerability from ossf_malicious_packages
Published
2026-04-29 12:00
Modified
2026-04-30 22:25
Summary
Malicious code in redeem-onchain-sdk (npm)
Details

redeem-onchain-sdk is a malicious npm package impersonating a Polymarket on-chain SDK. It collects SSH keys, AWS credentials, .npmrc tokens, Docker auth, Chrome saved logins, .env files, and a month of git commit history, then ships everything over a raw TCP socket to an AWS-hosted C2. Two triggers fire it: a require() side effect in the package's main entry point (added in v1.0.1) and a postinstall hook (added in v1.0.5). The payload lives in dist/proxy.js, later renamed dist/index5_test.js.

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

Source: amazon-inspector (765d01eed7c5ad80c911fec6f2e1778fb2c14fa7165520416d85273858f7e3e3)

The package redeem-onchain-sdk was found to contain malicious code.

Credits
Amazon Inspector actran@amazon.com
SafeDep safedep.io
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "redeem-onchain-sdk"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "versions": [
        "1.0.7"
      ]
    }
  ],
  "credits": [
    {
      "contact": [
        "actran@amazon.com"
      ],
      "name": "Amazon Inspector",
      "type": "FINDER"
    },
    {
      "contact": [
        "https://safedep.io"
      ],
      "name": "SafeDep",
      "type": "FINDER"
    }
  ],
  "database_specific": {
    "malicious-packages-origins": [
      {
        "import_time": "2026-04-30T22:23:13.562263137Z",
        "modified_time": "2026-04-30T21:59:18Z",
        "sha256": "765d01eed7c5ad80c911fec6f2e1778fb2c14fa7165520416d85273858f7e3e3",
        "source": "amazon-inspector",
        "versions": [
          "1.0.7"
        ]
      }
    ]
  },
  "details": "redeem-onchain-sdk is a malicious npm package impersonating a Polymarket on-chain SDK. It collects SSH keys, AWS credentials, .npmrc tokens, Docker auth, Chrome saved logins, .env files, and a month of git commit history, then ships everything over a raw TCP socket to an AWS-hosted C2. Two triggers fire it: a require() side effect in the package\u0027s main entry point (added in v1.0.1) and a postinstall hook (added in v1.0.5). The payload lives in dist/proxy.js, later renamed dist/index5_test.js.\n\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (765d01eed7c5ad80c911fec6f2e1778fb2c14fa7165520416d85273858f7e3e3)\nThe package redeem-onchain-sdk was found to contain malicious code.\n",
  "id": "MAL-2026-3182",
  "modified": "2026-04-30T22:25:12Z",
  "published": "2026-04-29T12:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://safedep.io/redeem-onchain-sdk-polymarket-npm-malware/"
    }
  ],
  "schema_version": "1.7.4",
  "summary": "Malicious code in redeem-onchain-sdk (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.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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