---
title: "CVE-2024-48910: DOMPurify vulnerable to tampering by prototype polution"
url: https://erroneo.us/security/cve/CVE-2024-48910/
description: "CVE-2024-48910 (dompurify (npm)): DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. DOMPurify was vulnerable to…"
type: vulnerability-record
section: "Security Digest"
date_published: 2024-10-31
date_modified: 2025-11-03
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2024-48910"
kev: false
cvss: 9.3
epss: 0.01151
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2024-48910: DOMPurify vulnerable to tampering by prototype polution

**Signal:** Critical and remotely reachable. No known exploitation yet, but it is network-reachable without credentials. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- No confirmed exploitation. It is not in CISA’s KEV catalog and CISA’s SSVC assessment records no known exploitation. That can change quickly after a public write-up; re-check if you are affected.
- EPSS 1.2% , percentile 67: FIRST’s model estimates a 1.2% chance of exploitation activity in the next 30 days, higher than 67% of all scored CVEs (moderate). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- Only applies if your dependency tree includes dompurify (npm) < 2.4.2, fixed in 2.4.2 . Check your lockfile, including transitive dependencies.

## What it is

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.

## Affected packages

- npm `dompurify` < 2.4.2 → fixed: 2.4.2

## Affected products (CVE record)

- cure53 DOMPurify: < 2.4.2

## Severity

- GitHub_M CVSS 3.1: 9.1 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N`
- GitHub CVSS 4.0: 9.3 `CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation none , automatable yes , technical impact total .
- FIRST EPSS (model of 2026-10-21): 1.15% probability of exploitation activity in the next 30 days; percentile 67.

## Sources

- [GitHub Advisory GHSA-p3vf-v8qc-cwcr](https://github.com/advisories/GHSA-p3vf-v8qc-cwcr)
- [CVE.org record CVE-2024-48910](https://www.cve.org/CVERecord?id=CVE-2024-48910)
- [NVD entry CVE-2024-48910](https://nvd.nist.gov/vuln/detail/CVE-2024-48910)
- [github.com](https://github.com/cure53/DOMPurify/security/advisories/GHSA-p3vf-v8qc-cwcr)
- [github.com](https://github.com/cure53/DOMPurify/commit/d1dd0374caef2b4c56c3bd09fe1988c3479166dc)
- [lists.debian.org](https://lists.debian.org/debian-lts-announce/2025/02/msg00010.html)

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Source page: https://erroneo.us/security/cve/CVE-2024-48910/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt