CVE-2025-26791

MEDIUM4.5EPSS 0.11%

DOMPurify allows Cross-site Scripting (XSS)

Published: 2/14/2025Modified: 2/4/2026

Also known as:GHSA-vhxf-7vqr-mrjgCGA-jvw3-vq6q-h2q7

Description

DOMPurify before 3.2.4 has an incorrect template literal regular expression when SAFE_FOR_TEMPLATES is set to true, sometimes leading to mutation cross-site scripting (mXSS).

Affected packages (2)

Debian/node-dompurifyfrom 0
npm/dompurifyfrom 0, < 3.2.4

CVSS scores

Source	Version	Severity	Vector
osv	CVSS 3.1	MEDIUM4.5	CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N

References (7)

ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2025-26791
ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2025-26791
PATCHhttps://github.com/cure53/DOMPurify
WEBhttps://ensy.zip/posts/dompurify-323-bypass
WEBhttps://github.com/cure53/DOMPurify/commit/d18ffcb554e0001748865da03ac75dd7829f0f02
WEBhttps://github.com/cure53/DOMPurify/releases/tag/3.2.4
WEBhttps://nsysean.github.io/posts/dompurify-323-bypass