mal-2026-4819
Vulnerability from ossf_malicious_packages
Published
2026-05-26 14:20
Modified
2026-05-26 14:20
Summary
Malicious code in token-me-uk (npm)
Details

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

Source: amazon-inspector (2a058b653e7a491fdf0c9128b4d2d408c2cdac6a1784adc5f02a0975a0e669eb)

The CLI in cli.mjs reads its API key from process.env.TOKEN_ME_UK_API_KEY, falling back to process.env.OPENAI_API_KEY and then process.env.ANTHROPIC_API_KEY (cli.mjs:7), and sends whichever value is found as a Bearer token in Authorization headers (cli.mjs:62) to hardcoded endpoints at https://www.token.me.uk/v1/dashboard/billing/subscription and /v1/dashboard/billing/usage. The package's README advertises only a Token.Me.Uk balance/usage checker and does not disclose that OpenAI or Anthropic provider keys present in the user's environment will be transmitted to a third-party domain. Any user invoking the CLI with these environment variables set silently delivers their provider credentials to token.me.uk, where they can be logged or abused. This matches the silent-relay pattern: caller-supplied secrets are routed through an undisclosed hardcoded destination controlled by the package author.

CWE
  • CWE-506 - The product contains code that appears to be malicious in nature.
Credits
Amazon Inspector actran@amazon.com

{
  "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": "cli.mjs",
              "sha256": "fef386bc9592848dd2a5d4f875cae76af4a0e403276cc938554dc0acb3fdf8d6",
              "tlsh": "fc81728d2dfba5218702603a7cab341e32275d02395dfd40f2bf8ad45f2553ca66ad8c"
            }
          ],
          "package_integrity": [
            {
              "filename": "token-me-uk-1.0.0.tgz",
              "hashes": {
                "sha1": "ddaaba171611511bbf5d584d3c893db59f67bee2",
                "sha512_sri": "sha512-LV73hkF6at2g77cPUr6Ma69n+rYKfDB4T9ktp00hfkV2BrEb0dltuZbNvSvOfrGIWQ2D04Ea0siisXEUVvprGg=="
              }
            }
          ]
        }
      },
      "package": {
        "ecosystem": "npm",
        "name": "token-me-uk"
      },
      "versions": [
        "1.0.0"
      ]
    }
  ],
  "credits": [
    {
      "contact": [
        "actran@amazon.com"
      ],
      "name": "Amazon Inspector",
      "type": "FINDER"
    }
  ],
  "database_specific": {
    "malicious-packages-origins": [
      {
        "id": "IN-MAL-2026-004916",
        "import_time": "2026-05-26T15:07:42.456011432Z",
        "modified_time": "2026-05-26T14:20:32Z",
        "sha256": "2a058b653e7a491fdf0c9128b4d2d408c2cdac6a1784adc5f02a0975a0e669eb",
        "source": "amazon-inspector",
        "versions": [
          "1.0.0"
        ]
      }
    ]
  },
  "details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: amazon-inspector (2a058b653e7a491fdf0c9128b4d2d408c2cdac6a1784adc5f02a0975a0e669eb)\nThe CLI in cli.mjs reads its API key from process.env.TOKEN_ME_UK_API_KEY, falling back to process.env.OPENAI_API_KEY and then process.env.ANTHROPIC_API_KEY (cli.mjs:7), and sends whichever value is found as a Bearer token in Authorization headers (cli.mjs:62) to hardcoded endpoints at https://www.token.me.uk/v1/dashboard/billing/subscription and /v1/dashboard/billing/usage. The package\u0027s README advertises only a Token.Me.Uk balance/usage checker and does not disclose that OpenAI or Anthropic provider keys present in the user\u0027s environment will be transmitted to a third-party domain. Any user invoking the CLI with these environment variables set silently delivers their provider credentials to token.me.uk, where they can be logged or abused. This matches the silent-relay pattern: caller-supplied secrets are routed through an undisclosed hardcoded destination controlled by the package author.\n",
  "id": "MAL-2026-4819",
  "modified": "2026-05-26T14:20:32Z",
  "published": "2026-05-26T14:20:32Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://www.npmjs.com/package/token-me-uk/v/1.0.0"
    }
  ],
  "schema_version": "1.7.4",
  "summary": "Malicious code in token-me-uk (npm)"
}


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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.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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