Unknown · Phpeventcalendar · CVE-2021-42077
**Name of the Vulnerable Software and Affected Versions**
PHP Event Calendar versions prior to 2021-09-03
**Description**
The issue allows SQL injection, as demonstrated by the "/server/ajax/user manager.php" endpoint, specifically the `username` parameter. This can be used to execute SQL statements directly on the database, potentially allowing an adversary to compromise the database system or bypass the login form.
**Recommendations**
For versions prior to 2021-09-03, update to a version released after 2021-09-03 to resolve the issue. As a temporary workaround, consider restricting access to the "/server/ajax/user manager.php" endpoint or sanitizing the `username` parameter to minimize the risk of exploitation.