CVE-2023-44390
HtmlSanitizer is a .NET library for cleaning HTML fragments and documents from constructs that can lead to XSS attacks.
Does this matter?
Lower severity and a low EPSS score (0.36%). Track it; it rarely justifies an emergency change on its own.
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 3.1
- 6.1 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- EPSS
- 0.36% probability · 30th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- htmlsanitizer project/htmlsanitizer
- Source
- security-advisories@github.com
References
- https://github.com/mganss/HtmlSanitizer/commit/ab29319866c020f0cc11e6b92228cd8039196c6ePatch
- https://github.com/mganss/HtmlSanitizer/security/advisories/GHSA-43cp-6p3q-2pc4Vendor Advisory
- https://github.com/mganss/HtmlSanitizer/commit/ab29319866c020f0cc11e6b92228cd8039196c6ePatch
- https://github.com/mganss/HtmlSanitizer/security/advisories/GHSA-43cp-6p3q-2pc4Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.