# CVE-2026-55073: weasyprint: WeasyPrint helps web developers to create PDF documents

CVE-2026-55073 is fixed in 2 products on 1 platform, first by OPENSUSE-SU-2026:21928-1, released September 21, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-55073
- Priority: Routine
- CVSS: 6.2 (medium)
- EPSS: 0.0023
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Sep 14, 2026

## Description

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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | python-weasyprint opensuse-leap 16.0 | 65.1-bp160.4.1 | [OPENSUSE-SU-2026:21928-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21928-1.md) | Sep 21, 2026 |
| Linux | weasyprint Debian 14 | 70.0-1 | [DEBIAN-CVE-2026-55073](https://patchblox.com/security/data/fix/linux/debian-cve-2026-55073.md) | Oct 13, 2026 |

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Data as of 2026-11-08T06:59:42Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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