DOMPurify XSS Bypass Vulnerabilities

DOMPurify versions 2.5.3-2.5.8 and 3.1.3-3.3.1 fail to sanitize attribute values within certain rawtext HTML elements (noscript, xmp, noembed, noframes, iframe), allowing attackers to inject malicious scripts that execute when sanitized content is rendered in these contexts. An attacker can exploit this by embedding JavaScript payloads in HTML attributes, bypassing DOMPurify's sanitization to achieve cross-site scripting. A patch is available in commit 729097f.

DOMPurify 3.1.3 through 3.2.6 and 2.5.3 through 2.5.8 contain a cross-site scripting vulnerability that allows attackers to bypass attribute sanitization by exploiting missing textarea rawtext element validation in the SAFE_FOR_XML regex. [CVSS 6.1 MEDIUM]