id: PYSEC-2026-1905
published: "2026-07-07T11:45:22.677621Z"
modified: "2026-07-07T17:25:21.767070Z"
aliases:
- CVE-2023-40024
- GHSA-6xcx-gx7r-rccj
summary: Scancode.io Reflected Cross-Site Scripting (XSS) in license endpoint
details: "### Summary\nIn the `/license/` endpoint, the detailed view key is not properly validated and sanitized, which can result in a potential cross-site scripting (XSS) vulnerability when attempting to access a detailed license view that does not exist.\n\n### Details\nIn the `/license/` endpoint, the `license_details_view` function is vulnerable to a potential cross-site scripting (XSS) attack due to inadequate validation and sanitization of the `key` parameter. This vulnerability arises when attempting to access a key with malicious javascript.\n\n```python\ndef license_details_view(request, key):\n    \"\"\"\n    Display all available information about a given license `key` followed by\n    the full license text.\n    \"\"\"\n    licenses = get_licenses()\n    try:\n        data = saneyaml.dump(licenses[key].to_dict())\n        text = licenses[key].text\n    except KeyError:\n        return HttpResponseNotFound(f\"License {key} not found.\") # Leads to cross-site scripting when key is malicious javascript\n    return HttpResponse(f\"<pre>{data}</pre><hr><pre>{text}</pre>\")\n```\n\n\n### PoC\n1. Access following endpoint on scancode.io instance: http://localhost/license/%3Cscript%3Ealert(document.cookie);%3C/script%3E/\n\n### Impact\nAttackers can exploit the vulnerability to inject malicious scripts into the response generated by the `license_details_view` function. When unsuspecting users visit the page, their browsers will execute the injected scripts, leading to unauthorized actions, session hijacking, or stealing sensitive information.\n"
affected:
- package:
    name: scancodeio
    ecosystem: PyPI
    purl: pkg:pypi/scancodeio
  ranges:
  - type: ECOSYSTEM
    events:
    - introduced: "0"
    - fixed: 32.5.2
  versions:
  - 32.0.1
  - 32.1.0
  - 32.2.0
  - 32.4.0
  - 32.5.0
  - 32.5.1
references:
- type: WEB
  url: https://github.com/nexB/scancode.io/security/advisories/GHSA-6xcx-gx7r-rccj
- type: ADVISORY
  url: https://nvd.nist.gov/vuln/detail/CVE-2023-40024
- type: PACKAGE
  url: https://github.com/nexB/scancode.io
- type: WEB
  url: "https://github.com/nexB/scancode.io/blob/dd7769fbc97c84545579cebf1dc4838214098a11/CHANGELOG.rst#v3252-2023-08-14"
- type: WEB
  url: https://github.com/nexB/scancode.io/releases/tag/v32.5.2
- type: PACKAGE
  url: https://pypi.org/project/scancodeio
- type: ADVISORY
  url: https://github.com/advisories/GHSA-6xcx-gx7r-rccj
severity:
- type: CVSS_V3
  score: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N