CVE-2026-49452: Improper Neutralization of Special Elements in Output Used by a Downstream Component

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 presentationalhints=True. The background attribute is inserted into a background-image:url declaration and parsed b...