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

影響: npm:sanitize-html >= 2.17.7, < 2.18.0 → 2.18.0

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., svg:animate instead of animate). Root Cause The animatesUrlAttribute function (index.js, line ~832) checks svgAnimationTags.indexOf(name.toLowerCase()), where svgAnimationTags contains bare local n…

在 GitHub Advisory Database 阅读

2026/10/21 03:21，GitHub Advisory Database 发布了“ApostropheCMS sanitize-html: SMIL animation namespace-prefix bypass allows javascript: URI injection (XSS)”（类型：漏洞公告）。严重程度为“低危”（low）。相关技术：JavaScript / Node.js。CVE：CVE-2026-113657。