CVE-2026-40301
rhukster/dom-sanitizer: SVG <style> tag allows CSS injection via unfiltered url() and @import directives
- State
- Published
- Severity
- 4.7 Medium
- Published
- Apr 17, 2026
- Updated
- Apr 20, 2026
- Reserved
- Apr 10, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 4.7 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N | GitHub_M |
Weaknesses
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products
| Product | Versions |
|---|---|
dom-sanitizerrhukster |
|
References
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