CVE-2026-49452: WeasyPrint helps web developers to create PDF documents. Prior to 69.0, WeasyPrint embeds unescaped HTML presentational-hint attribute values into CSS in…

PriorityP338medium6.5CVSS 3.1

AVNACLPRNUINSUCLILAN

EPSS

0.37%

30.0th percentile

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.

Affected

1 ranges

Vendor	Product	Version range	Fixed in
kozea	weasyprint	< 69.0	69.0

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