CVE-2021-42077

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.

CVSS v3.1

9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0

10.0 HIGHAV:N/AC:L/Au:N/C:C/I:C/A:C

EPSS

2.51% chance of exploitation in the next 30 days, 84th percentile

Published

2021-11-08

Updated

2024-08-04

Proof-of-concept exploits (2)

• http://packetstormsecurity.com/files/164777/PHP-Event-Calendar-Lite-Edition-SQL-Injection…
• https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2021-048.txt

References

• CVE Record
• NVD entry

Related

• CVE-2021-42071
• CVE-2021-42078
• CVE-2021-42063
• CVE-2021-42079
• CVE-2021-42057
• CVE-2021-4208