VDB
CVE-2026-49452
CVE-2026-49452
PUBLISHED
CVSS 6.5 MEDIUM
Reported by GitHub_M · Published August 18, 2026
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.
Risk Scores
CVSS 3.1
6.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Kozea | WeasyPrint | < 69.0 |
| Kozea | WeasyPrint | < 69.0, < 69.0 |
| alpine | weasyprint | 0, 0, 0 |
Timeline
- Jul 10, 2026 CVE Published
- Aug 8, 2026 Security Advisory
References
- https://github.com/Kozea/WeasyPrint/security/advisories/GHSA-jhhc-3hcp-qhm5 x_refsource_CONFIRM
- https://github.com/Kozea/WeasyPrint/pull/2773 x_refsource_MISC
- https://github.com/Kozea/WeasyPrint/commit/e158264e33fa399b29f415d30719c1d85a55df1d x_refsource_MISC
- https://github.com/Kozea/WeasyPrint/releases/tag/v69.0 x_refsource_MISC