CVE-2018-10949

Severity: medium (CVSS 5.3 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-05-10 · updated 2026-06-17
Weakness: CWE-203

Description

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.

Affected products

Zimbra Collaboration: from 8.7.0 through 8.7.11; from 8.8 before 8.8.8; 8.6.0 — fixed in 8.8.8

How to fix

Upgrade to a fixed version: Zimbra Collaboration 8.8.8. Check the vendor advisory for mitigations.

References

https://bugzilla.zimbra.com/show_bug.cgi?id=108962
https://bugzilla.zimbra.com/show_bug.cgi?id=108962

Get alerted when CVE-2018-10949 or the next vulnerability affects your stack