The host is installed with PHP 7.3.27 through 7.3.33, 7.4.15 through 7.4.33, 8.0.2 before 8.1.29, 8.2.x before 8.2.20, or 8.3.x before 8.3.8 and is prone to a filter bypass vulnerability. A flaw is present in the application, which fails to properly handle a code logic error, filtering functions such as filter_var when validating URLs (FILTER_VALIDATE_URL) for certain types of URLs. Successful exploitation allows an attacker to lead to the downstream code accepting invalid URLs as valid and parsing them incorrectly.