install/index.php in WebCalendar before 1.2.5 allows remote attackers to execute arbitrary code via the form_single_user_login parameter.
http://sourceforge.net/projects/webcalendar/files/webcalendar%201.2/1.2.5/
Source: Mitre, NVD
Published: 2020-01-27
Updated: 2020-01-29
Base Score: 7.5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P
Severity: High
Base Score: 9.8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity: Critical