CVE-2023-44390 HtmlSanitizer vulnerable to Cross-site Scripting in Foreign Content

2023-10-0513:41:20

CWE-79

GitHub_M

www.cve.org

htmlsanitizer

cross-site scripting

vulnerability

cve-2023-44390

.net

xss

foreign content

svg

math

sanitization

javascript

version 8.0.723

version 8.1.722-beta

6.1 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

0.0005 Low

EPSS

Percentile

17.1%

JSON

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).

CNA Affected

[
  {
    "vendor": "mganss",
    "product": "HtmlSanitizer",
    "versions": [
      {
        "version": "< 8.0.723",
        "status": "affected"
      },
      {
        "version": ">= 8.1.0-beta, < 8.1.722-beta",
        "status": "affected"
      }
    ]
  }
]