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CVE-2024-48910

CriticalPublished

DOMPurify vulnerable to tampering by prototype polution

Published: Oct 31, 2024
Updated: Nov 3, 2025
Assigning CNA: GitHub_M
Evidence observed: Aug 8, 2026

Primary CVSS

9.8/ 10Critical

nvd · CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS probability estimate

1.2%

Low · next 30 days

Percentile: 65.1%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. DOMPurify was vulnerable to prototype pollution. This vulnerability is fixed in 2.4.2.

Sources

CVE-2024-48910-POCPoC
Proof of concept demonstrating prototype pollution in DOMPurify leading to client-side XSS, with a demo of the attack chain.
CVE-2024-48910-PoCPoC
Proof-of-concept exploit for CVE-2024-48910, demonstrating prototype pollution bypass of DOMPurify XSS sanitizer to execute arbitrary JavaScript via crafted HTML attributes.

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