Description
In PHP versions 7.3.x below 7.3.29, 7.4.x below 7.4.21 and 8.0.x below 8.0.8, when using URL validation functionality via filter_var() function with FILTER_VALIDATE_URL parameter, an URL with invalid password field can be accepted as valid. This can lead to the code incorrectly parsing the URL and potentially leading to other security implications - like contacting a wrong server or making a wrong access decision.
Remediation
References
Related Vulnerabilities
Apache HTTP Server Improper Input Validation Vulnerability (CVE-2016-2161)
MySQL CVE-2012-1690 Vulnerability (CVE-2012-1690)
WeBid Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (CVE-2011-3815)
Sqlite Unrestricted Upload of File with Dangerous Type Vulnerability (CVE-2019-19925)
WordPress Plugin Hide Featured Image Unspecified Vulnerability (1.1)