CVE-2023-44390

HtmlSanitizer vulnerable to Cross-site Scripting in Foreign Content

State
Published
Severity
6.1 Medium
Published
Oct 5, 2023
Updated
Sep 19, 2024
Reserved
Sep 28, 2023

Read the record on cve.org

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).

Scores

CVSSScoreVectorSource
3.16.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:NGitHub_M

Weaknesses

  • CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Affected Products

ProductVersions
HtmlSanitizermganss
  • < 8.0.723Affected
  • >= 8.1.0-beta, < 8.1.722-betaAffected

References

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