CVE-2025-55166: Darylldoyle Svg-Sanitizer

Medium severity, CVSS 5.1. EPSS: 0.5% chance of exploitation in the next 30 days.

savg-sanitizer is a PHP SVG/XML sanitizer. Prior to version 0.22.0, the sanitization logic in the cleanXlinkHrefs method only searches for lower-case attribute name, which allows to by-pass the isHrefSafeValue check. As a result this allows cross-site scripting or linking to external domains. This issue has been patched in version 0.22.0.

Affected products

• Darylldoyle Svg-Sanitizer: before 0.22.0 (fixed in 0.22.0)

Published 2025-08-12. Last modified 2026-06-17.