Description
In PHP versions 7.2.x below 7.2.34, 7.3.x below 7.3.23 and 7.4.x below 7.4.11, when PHP is processing incoming HTTP cookie values, the cookie names are url-decoded. This may lead to cookies with prefixes like __Host confused with cookies that decode to such prefix, thus leading to an attacker being able to forge cookie which is supposed to be secure. See also CVE-2020-8184 for more information.
Remediation
References
Related Vulnerabilities
OpenSSL Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (CVE-2016-0701)
PHP Use of Externally-Controlled Format String Vulnerability (CVE-2006-0200)
WordPress Plugin Weather Effect-Christmas Santa Snow Falling Cross-Site Request Forgery (1.3.3)
WordPress Plugin Stripe Payment for WooCommerce Cross-Site Scripting (3.5.9)