The Stop Spammers WordPress plugin before 2021.9 did not escape user input when blocking requests (such as matching a spam word), outputting it in an attribute after sanitising it to remove HTML tags, which is not sufficient and lead to a reflected Cross-Site Scripting issue.
|trumani:stop_spammers||trumani stop spammers||2021.9|
WordPress Stop Spammers Plugin Cross Site Scripting (CVE-2021-24245)
WordPress Stop Spammers 2021.8 Plugin - (log) Reflected Cross-site Scripting Vulnerability
WordPress Stop Spammers 2021.8 Cross Site Scripting
WordPress Stop Spammers plugin <= 2021.8 - Reflected Cross-Site Scripting (XSS) vulnerability