An authenticated user (using the auth_users plugin authentication method) could install a custom package even if this user is not superuser.
This is fixed in the version 2.2.15. Users should upgrade to this version as soon as possible.
0.100.110.120.130.140.150.160.170.180.19+116 more2.2.15Exploitability
AV:NAC:LAT:NPR:LUI:NVulnerable System
VC:LVI:HVA:LSubsequent System
SC:LSI:LSA:LCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:L/SC:L/SI:L/SA:L