CVE Vulnerability

CVE-2020-26293

HtmlSanitizer is a .NET library for cleaning HTML fragments and documents from constructs that can lead to XSS attacks. In HtmlSanitizer before version 5.0.372, there is a possible XSS bypass if style tag is allowed. If you have explicitly allowed the `` tag, an attacker could craft HTML that includes script after passing through the sanitizer. The default settings disallow the `` tag so there is no risk if you have not explicitly allowed the `` tag. The problem has been fixed in version 5.0.372.

4.3 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8.6 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

Scope

6.1 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References
Link Resource
https://github.com/mganss/HtmlSanitizer/security/advisories/GHSA-8j9v-h2vp-2hhv Third Party Advisory
https://github.com/mganss/HtmlSanitizer/commit/a3a7602a44d4155d51ec0fbbedc2a49e9c7e2eb8 Patch Third Party Advisory
https://github.com/mganss/HtmlSanitizer/releases/tag/v5.0.372 Release Notes Third Party Advisory
https://www.nuget.org/packages/HtmlSanitizer/ Product Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:htmlsanitizer_project:htmlsanitizer:*:*:*:*:*:*:*:*
Information

Published : 2021-01-04 07:15

Updated : 2021-01-07 08:29

NVD link : CVE-2020-26293

Mitre link : CVE-2020-26293

Products Affected
No products.
CWE
CWE-79