An issue was discovered in Joomla! 2.5.0 through 3.9.27. Missing validation of input could lead to a broken usergroups table.
https://developer.joomla.org/security-centre/857-20210702-core-dos-through-usergroup-table-manipulation.html
Source: Mitre, NVD
Published: 2021-07-07
Updated: 2021-07-09
Base Score: 5
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P
Severity: Medium
Base Score: 7.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Severity: High