In Joomla! before 3.9.19, missing token checks in com_postinstall lead to CSRF.
https://developer.joomla.org/security-centre/817-20200605-core-csrf-in-com-postinstall
Source: Mitre, NVD
Published: 2020-06-02
Updated: 2020-10-19
Base Score: 6.8
Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P
Severity: Medium
Base Score: 8.8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Severity: High