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PYSEC-2026-2033

Vulnerability from pysec - Published: 2026-07-07 11:45 - Updated: 2026-07-07 17:25
VLAI
Details

Impact

Since version 61.0, there's a vulnerability which allows attaching content of arbitrary files and URLs to a generated PDF document, even if url_fetcher is configured to prevent access to files and URLs.

Patches

Fixed by 734ee8e that’s included in 61.2

Workarounds

  • Check that no PDF attachment is defined in source HTML.
  • Launch WeasyPrint in a sandbox that prevents access to the filesystem and the network.
Severity
7.4 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L
Impacted products
Name purl
weasyprint pkg:pypi/weasyprint
Aliases
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "weasyprint",
        "purl": "pkg:pypi/weasyprint"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "61.0"
            },
            {
              "fixed": "61.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "61.0",
        "61.1"
      ]
    }
  ],
  "aliases": [
    "CVE-2024-28184",
    "GHSA-35jj-wx47-4w8r"
  ],
  "details": "### Impact\nSince version 61.0, there\u0027s a vulnerability which allows attaching content of arbitrary files and URLs to a generated PDF document, even if `url_fetcher` is configured to prevent access to files and URLs.\n\n### Patches\nFixed by 734ee8e that\u2019s included in 61.2\n\n### Workarounds\n- Check that no PDF attachment is defined in source HTML.\n- Launch WeasyPrint in a sandbox that prevents access to the filesystem and the network.",
  "id": "PYSEC-2026-2033",
  "modified": "2026-07-07T17:25:49.809516Z",
  "published": "2026-07-07T11:45:34.890224Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/Kozea/WeasyPrint/security/advisories/GHSA-35jj-wx47-4w8r"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-28184"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Kozea/WeasyPrint/commit/734ee8e2dc84ff3090682f3abff056d0907c8598"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/Kozea/WeasyPrint"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZLQZMOEDY72TS43HDXOBVID2VYCTWIH6"
    },
    {
      "type": "PACKAGE",
      "url": "https://pypi.org/project/weasyprint"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-35jj-wx47-4w8r"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "WeasyPrint allows the attachment of arbitrary files and URLs to a PDF"
}



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Nomenclature

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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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