ApostropheCMS sanitize-html: SMIL animation namespace-prefix bypass allows javascript: URI injection (XSS)

Summary sanitize-html 2.17.7 introduced animatesUrlAttribute to block SVG animation elements animate, animateColor, animateMotion, animateTransform, set when their attributeName targets a URL sink like href. However, this check is bypassed when the animation element uses a namespace prefix e.g.,...