A CVE has been assigned for a security issue in ruby-net-ldap: http://openwall.com/lists/oss-security/2017/12/17/10 The issue was fixed upstream in 0.16.0 (already in Cauldron). If I'm reading this correctly, it's not considered a security issue in versions before 0.10.0 (thus Mageia 5).
Status comment: (none) => Fixed upstream in 0.16.0
Mageia 6 is EOL.
CC: (none) => mramboResolution: (none) => OLDStatus: NEW => RESOLVED