CVE-2026-40301

MEDIUM

rhukster/dom-sanitizer: SVG <style> tag allows CSS injection via unfiltered url() and @import directives

Title source: cna
STIX 2.1

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.

References (3)

Core 3

Scores

CVSS v3 4.7
EPSS 0.0027
EPSS Percentile 18.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-79
Status published
Products (2)
rhukster/dom-sanitizer 0 - 1.0.10Packagist
rhukster/dom-sanitizer < 1.0.10
Published Apr 17, 2026
Tracked Since Apr 18, 2026