Jenkins before 2.3 and LTS before 1.651.2 allow remote authenticated users with multiple accounts to cause a denial of service (unable to login) by editing the "full name."
http://rhn.redhat.com/errata/RHSA-2016-1773.html
https://access.redhat.com/errata/RHSA-2016:1206
Published: 2016-05-17
Base Score: 4
Vector: CVSS2#AV:N/AC:L/Au:S/C:N/I:N/A:P
Severity: Medium
Base Score: 4.3
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L