An issue was discovered in Sonatype Nexus Repository Manager 2.x before 2.14.17 and 3.x before 3.22.1. Admin users can retrieve the LDAP server system username/password (as configured in nxrm) in cleartext.
Sonatype Nexus Repository Manager before 3.17.0 has a weak default of giving any unauthenticated user read permissions on the repository files and images.