Description
An issue was discovered in Squid 3.x and 4.x through 4.8 when the append_domain setting is used (because the appended characters do not properly interact with hostname length restrictions). Due to incorrect message processing, it can inappropriately redirect traffic to origins it should not be delivered to.
Remediation
References
Related Vulnerabilities
PHP-Fusion Improper Privilege Management Vulnerability (CVE-2020-24949)
MediaWiki URL Redirection to Untrusted Site ('Open Redirect') Vulnerability (CVE-2017-0363)
Oracle JRE CVE-2013-5832 Vulnerability (CVE-2013-5832)
WordPress Plugin WP Maintenance Mode & Site Under Construction Cross-Site Request Forgery (1.8.2)