Sonatype Nexus Repository Manager 3.x before 3.29.0 allows a user with admin privileges to configure the system to gain access to content outside of NXRM via an XXE vulnerability. Fixed in version 3.29.0.
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.