# CVE-2026-49452: weasyprint: WeasyPrint helps web developers to create PDF documents

CVE-2026-49452 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-49452, released June 24, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-49452
- Priority: Routine
- CVSS: 6.5 (medium)
- EPSS: 0.0037
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jul 16, 2026

## Description

WeasyPrint helps web developers to create PDF documents. Prior to 69.0, WeasyPrint embeds unescaped HTML presentational-hint attribute values into CSS in weasyprint/css/__init__.py when presentational_hints=True. The background attribute is inserted into a background-image:url() declaration and parsed by tinycss2.parse_blocks_contents(), allowing untrusted HTML to inject additional CSS declarations. Applications that render untrusted HTML with presentational hints enabled can be affected by CSS injection and server-side requests through injected url() values. This issue is fixed in version 69.0.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | python-weasyprint opensuse-leap 16.0 | 65.1-bp160.3.1 | [OPENSUSE-SU-2026:21364-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21364-1.md) | Jul 16, 2026 |
| Linux | weasyprint Debian 14 | 69.0-1 | [DEBIAN-CVE-2026-49452](https://patchblox.com/security/data/fix/linux/debian-cve-2026-49452.md) | Jun 24, 2026 |

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Data as of 2026-11-08T19:12:23Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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