CVE-2016-4427: Zulip

High severity, CVSS 7.5. EPSS: 0.7% chance of exploitation in the next 30 days.

In zulip before 1.3.12, deactivated users could access messages if SSO was enabled.

Affected products

• Zulip Zulip: before 1.3.12 (fixed in 1.3.12)

Published 2022-07-28. Last modified 2026-06-17.