CVE-2022-23519 Information

Description

rails-html-sanitizer is responsible for sanitizing HTML fragments in Rails applications. Prior to version 1.4.4 a possible XSS vulnerability with certain configurations of Rails::Html::Sanitizer may allow an attacker to inject content if the application developer has overridden the sanitizer’s allowed tags in either of the following ways: allow both \math\ and \style\ elements or allow both \svg\ and \style\ elements. Code is only impacted if allowed tags are being overridden. . This issue is fixed in version 1.4.4. All users overriding the allowed tags to include \math\ or \svg\ and \style\ should either upgrade or use the following workaround immediately: Remove \style\ from the overridden allowed tags or remove \math\ and \svg\ from the overridden allowed tags.

Reference

https://hackerone.com/reports/1656627 https://github.com/rails/rails-html-sanitizer/security/advisories/GHSA-9h9g-93gc-623h