Vulnerability Description
HtmlSanitizer is a .NET library for cleaning HTML fragments and documents from constructs that can lead to XSS attacks. The vulnerability occurs in configurations where foreign content is allowed, i.e. either `svg` or `math` are in the list of allowed elements. In the case an application sanitizes user input with a vulnerable configuration, an attacker could bypass the sanitization and inject arbitrary HTML, including JavaScript code. Note that in the default configuration the vulnerability is not present. The vulnerability has been fixed in versions 8.0.723 and 8.1.722-beta (preview version).
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Htmlsanitizer Project | Htmlsanitizer | < 8.0.723 |
Related Weaknesses (CWE)
References
- https://github.com/mganss/HtmlSanitizer/commit/ab29319866c020f0cc11e6b92228cd803Patch
- https://github.com/mganss/HtmlSanitizer/security/advisories/GHSA-43cp-6p3q-2pc4Vendor Advisory
- https://github.com/mganss/HtmlSanitizer/commit/ab29319866c020f0cc11e6b92228cd803Patch
- https://github.com/mganss/HtmlSanitizer/security/advisories/GHSA-43cp-6p3q-2pc4Vendor Advisory
FAQ
What is CVE-2023-44390?
CVE-2023-44390 is a vulnerability with a CVSS score of 6.1 (MEDIUM). HtmlSanitizer is a .NET library for cleaning HTML fragments and documents from constructs that can lead to XSS attacks. The vulnerability occurs in configurations where foreign content is allowed, i.e...
How severe is CVE-2023-44390?
CVE-2023-44390 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-44390?
Check the references section above for vendor advisories and patch information. Affected products include: Htmlsanitizer Project Htmlsanitizer.