Medium 6.2Published Sep 14, 2026

CVE-2026-55073WeasyPrint restrictive URL fetcher bypass allows local file read and SSRF

Updated under an hour ago (2026-10-19 09:40 UTC)

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Every CVE for Kozea WeasyPrint

Exploited in the last 30 days

WeasyPrint helps web developers to create PDF documents. Prior to 70.0, server-side applications that configure a restrictive url_fetcher and pass attacker-influenced values to HTML.write_pdf() can have the restriction bypassed through the xmp_metadata or stylesheets options. In weasyprint/pdf/init.py, xmp_metadata calls select_source() without the document url_fetcher, allowing an accessible local file to be read and embedded verbatim in the output PDF. In weasyprint/document.py, stylesheets constructs CSS() without the document url_fetcher, allowing local or internal resource loading and propagating the permissive fetcher through nested CSS imports and url() references. The stylesheets channel applies fetched resources but does not by itself disclose stylesheet comments verbatim. This issue is fixed in version 70.0.

CVSS: 6.2 MEDIUM (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness (CWE): CWE-918
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Sep 16, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Kozea WeasyPrint kozea:weasyprint (from the name)	before 70.0	CNA record

References

https://github.com/Kozea/WeasyPrint/security/advisories/GHSA-jf6q-chmf-3h3vx-refsource-confirm
https://github.com/Kozea/WeasyPrint/commit/289e278439b017cd9263b4cd4727026987f86443x-refsource-misc
https://github.com/Kozea/WeasyPrint/releases/tag/v70.0x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.