Cross-site Scripting (XSS) Affecting sanitize-html package, versions <1.4.3


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.09% (39th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications

Snyk Learn

Learn about Cross-site Scripting (XSS) vulnerabilities in an interactive lesson.

Start learning
  • Snyk IDnpm:sanitize-html:20141024
  • published6 Nov 2015
  • disclosed6 Nov 2015
  • creditUnknown

Introduced: 6 Nov 2015

CVE-2016-1000237  (opens in a new tab)
CWE-79  (opens in a new tab)

Overview

Since the sanitize-html module trusts 'text' coming from htmlparser2, and outputs it without further escaping (because htmlparser2 does not decode entities in text before delivering it), this results in an XSS attack vector if sanitize-html ignores the img tag (according to user-configured filter rules) but passes the text intact, as it must do to keep any text in documents.

CVSS Scores

version 3.1