PT-2026-79771

justhtml versions 1.13.0 and earlier contain a parser-differential / mutation cross-site scripting mXSS vulnerability when using a custom SanitizationPolicy that preserves foreign namespaces e.g., drop foreign namespaces=False with allowlisted SVG/MathML elements or raw-text containers such as...

GHSA-4P64-V8F5-R2GX Multiple security fixes in justhtml

Summary justhtml 1.16.0 fixes multiple security issues in sanitization, serialization, and programmatic DOM handling. Most of these issues affected one of these advanced paths rather than ordinary parsed HTML with the default safe settings: - programmatic DOM input to sanitize or sanitizedom -...