Description
The sanitize helper in lib/action_controller/vendor/html-scanner/html/sanitizer.rb in the Action Pack component in Ruby on Rails before 2.3.18, 3.0.x and 3.1.x before 3.1.12, and 3.2.x before 3.2.13 does not properly handle encoded : (colon) characters in URLs, which makes it easier for remote attackers to conduct cross-site scripting (XSS) attacks via a crafted scheme name, as demonstrated by including a : sequence.
Remediation
References
Related Vulnerabilities
MySQL CVE-2018-2668 Vulnerability (CVE-2018-2668)
OpenSSL NULL Pointer Dereference Vulnerability (CVE-2004-0079)
WordPress Plugin Pagination by BestWebSoft Cross-Site Scripting (1.0.6)
WordPress Plugin YITH WooCommerce Multi Vendor Cross-Site Scripting (3.8.0)
Jetty Uncontrolled Resource Consumption Vulnerability (CVE-2020-27223)