mailboxd in Zimbra Collaboration Suite 8.8 before 8.8.8; 8.7 before 8.7.11.Patch3; and 8.6 allows Account Enumeration by leveraging a Discrepancy between the "HTTP 404 - account is not active" and "HTTP 401 - must authenticate" errors.
No PoCs from references.
- https://github.com/0x00-0x00/CVE-2018-10949
- https://github.com/0xT11/CVE-POC