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.
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
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| python-weasyprint · opensuse-leap 16.0 | 65.1-bp160.3.1 | OPENSUSE-SU-2026:21364-1 | Jul 16, 2026 |
| weasyprint · Debian 14 | 69.0-1 | DEBIAN-CVE-2026-49452 | Jun 24, 2026 |
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