CVE-2024-45801 – Tampering by prototype polution in DOMPurify

https://notcve.org/view.php?id=CVE-2024-45801

DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. It has been discovered that malicious HTML using special nesting techniques can bypass the depth checking added to DOMPurify in recent releases. It was also possible to use Prototype Pollution to weaken the depth check. This renders dompurify unable to avoid cross site scripting (XSS) attacks. This issue has been addressed in versions 2.5.4 and 3.1.3 of DOMPurify. • https://github.com/cure53/DOMPurify/security/advisories/GHSA-mmhx-hmjr-r674 https://github.com/cure53/DOMPurify/commit/1e520262bf4c66b5efda49e2316d6d1246ca7b21 https://github.com/cure53/DOMPurify/commit/26e1d69ca7f769f5c558619d644d90dd8bf26ebc • CWE-1333: Inefficient Regular Expression Complexity •