// For flags

CVE-2023-44390

HtmlSanitizer vulnerable to Cross-site Scripting in Foreign Content

Severity Score

6.1
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track
*SSVC
Descriptions

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).

HtmlSanitizer es una librería .NET para limpiar fragmentos y documentos HTML de construcciones que pueden provocar ataques XSS. La vulnerabilidad ocurre en configuraciones donde se permite contenido externo, es decir, "svg" o "math" están en la lista de elementos permitidos. En el caso de que una aplicación sanitice la entrada del usuario con una configuración vulnerable, un atacante podría eludir la sanitización e inyectar HTML arbitrario, incluido código JavaScript. Tenga en cuenta que en la configuración predeterminada la vulnerabilidad no está presente. La vulnerabilidad se ha solucionado en las versiones 8.0.723 y 8.1.722-beta (versión preliminar).

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:Track
Exploitation
None
Automatable
No
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2023-09-28 CVE Reserved
  • 2023-10-05 CVE Published
  • 2024-09-19 CVE Updated
  • 2025-04-15 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Htmlsanitizer Project
Search vendor "Htmlsanitizer Project"
 Htmlsanitizer
Search vendor "Htmlsanitizer Project" for product "Htmlsanitizer"
 < 8.0.723
Search vendor "Htmlsanitizer Project" for product "Htmlsanitizer" and version " < 8.0.723"
-
Affected
Htmlsanitizer Project
Search vendor "Htmlsanitizer Project"
 Htmlsanitizer
Search vendor "Htmlsanitizer Project" for product "Htmlsanitizer"
 8.1.719
Search vendor "Htmlsanitizer Project" for product "Htmlsanitizer" and version "8.1.719"
beta
Affected