CVE-2026-7808 - justhtml before 1.16.0 Multiple Security Issues via Sanitization
Brief
CVE ID : CVE-2026-7808
Published : Aug. 23, 2026, 2:16 p. m.
- 2 hours, 54 minutes ago
Description : justhtml before 1.
- 0 contains multiple HTML sanitization bypass issues that can allow active/dangerous content (e. g. , script or style) to survive sanitization, potentially leading to cross-site scripting. The issues primarily affect advanced usage rather than the default JustHTML(...
, sanitize=True) path for ordinary parsed HTML: mutating or reusing sanitization policy objects (including exported defaults) could weaken later sanitization; programmatic DOM input to sanitize()/sanitize_dom() could miss mixed-case tag names (e. g.
, ScRiPt, StYlE); crafted programmatic doctype names could serialize into active markup; and custom policies preserving SVG or MathML could allow animation elements, presentation attributes with external url(...)