MEDIUM

GHSA-3p68-m5qw-9g9w

HTML Purifier cross-site scripting (XSS) vulnerability

Quick fix

GHSA-3p68-m5qw-9g9w — ezyang/htmlpurifier: upgrade to the fixed version with the command below.

composer require ezyang/htmlpurifier:^4.1.0

Details

Multiple cross-site scripting (XSS) vulnerabilities in HTML Purifier before 4.1.0, when Internet Explorer is used, allow remote attackers to inject arbitrary web script or HTML via a crafted (1) background-image, (2) background, or (3) font-family Cascading Style Sheets (CSS) property, a different vulnerability than CVE-2010-2479.

Are you affected?

Enter the version of the package you're using.

Affected packages

Packagist/ezyang/htmlpurifier

Introduced in: 0Fixed in: 4.1.0

Fixcomposer require ezyang/htmlpurifier:^4.1.0

References

https://nvd.nist.gov/vuln/detail/CVE-2010-4183[ADVISORY]
https://github.com/FriendsOfPHP/security-advisories/blob/master/ezyang/htmlpurifier/CVE-2010-4183.yaml[WEB]
https://github.com/ezyang/htmlpurifier[PACKAGE]
http://htmlpurifier.org/news/2010/0915-4.2.0-released[WEB]
http://htmlpurifier.org/security/2010/css-quoting[WEB]