Critical severity9.8NVD Advisory· Published Nov 8, 2021· Updated Jun 17, 2026
CVE-2021-42077
CVE-2021-42077
Description
PHP Event Calendar before 2021-09-03 allows SQL injection, as demonstrated by the /server/ajax/user_manager.php username parameter. This can be used to execute SQL statements directly on the database, allowing an adversary in some cases to completely compromise the database system. It can also be used to bypass the login form.
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Affected products
2- PHP/Event Calendardescription
- Range: <2021-09-03
Patches
Vulnerability mechanics
References
2- packetstormsecurity.com/files/164777/PHP-Event-Calendar-Lite-Edition-SQL-Injection.htmlnvdExploitThird Party AdvisoryVDB Entry
- www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2021-048.txtnvdExploitThird Party Advisory
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