Launchpad.net

CVE 2018-11565

Mahara 17.04 before 17.04.8 and 17.10 before 17.10.5 and 18.04 before 18.04.1 are vulnerable to mentioning the usernames that are already taken by people registered in the system rather than masking that information.

See the CVE page on Mitre.org for more details.