phpMyChat Plus 1.98 contains a SQL injection vulnerability in the deluser.php page through the pmc_username parameter that allows attackers to manipulate database queries. Attackers can exploit boolean-based, error-based, and time-based blind SQL injection techniques to extract sensitive database information by crafting malicious payloads in the username field.

phpMyChat-Plus 1.98 is vulnerable to multiple SQL injections against the deluser.php Delete User functionality, as demonstrated by pmc_username.

phpMyChat-Plus 1.98 is vulnerable to reflected XSS via JavaScript injection into the password reset URL. In the URL, the pmc_username parameter to pass_reset.php is vulnerable.