CVE-2026-40301

Published April 17th, 2026

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CVSS v3

4.7

MEDIUM

CVSS v2

N/A

Affected

PROJECT

Description

DOMSanitizer is a DOM/SVG/MathML Sanitizer for PHP 7.3+. Prior to version 1.0.10, DOMSanitizer::sanitize() allows <style> elements in SVG content but never inspects their text content. CSS url() references and @import rules pass through unfiltered, causing the browser to issue HTTP requests to attacker-controlled hosts when the sanitized SVG is rendered. Version 1.0.10 fixes the issue.

rhukster/dom-sanitizer

A simple but effective DOM/SVG/MathML Sanitizer for PHP 7.3+

GitHub