CVE-2025-55166

svg-sanitizer By-Passing Attribute Sanitization

State: Published
Severity: 5.1 Medium
Published: Aug 12, 2025
Updated: Aug 12, 2025
Reserved: Aug 7, 2025

Description

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.

Scores

CVSS	Score	Vector	Source
4.0	5.1 Medium	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N	GitHub_M

Weaknesses

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-601 URL Redirection to Untrusted Site ('Open Redirect')

Affected Products

Product	Versions
svg-sanitizerdarylldoyle	< 0.22.0Affected

References

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