CVE-2025-55166

svg-sanitizer By-Passing Attribute Sanitization

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.

Category

5.1
CVSS
Severity: Medium
CVSS 4.0 •
EPSS 0.05%
Affected: darylldoyle svg-sanitizer
Published at:
Updated at:

References

Link Tags
https://github.com/darylldoyle/svg-sanitizer/security/advisories/GHSA-22wq-q86m-83fh
https://github.com/darylldoyle/svg-sanitizer/commit/5a0a1eaf0c6b0b540dc945fe30c93cf106b357c1

Frequently Asked Questions

What is the severity of CVE-2025-55166?
CVE-2025-55166 has been scored as a medium severity vulnerability.
How to fix CVE-2025-55166?
To fix CVE-2025-55166, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-55166 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-55166 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-55166?
CVE-2025-55166 affects darylldoyle svg-sanitizer.
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