CVE-2022-24751: Zulip

High severity, CVSS 7.4. EPSS: 1% chance of exploitation in the next 30 days.

Zulip is an open source group chat application. Starting with version 4.0 and prior to version 4.11, Zulip is vulnerable to a race condition during account deactivation, where a simultaneous access by the user being deactivated may, in rare cases, allow continued access by the deactivated user. A patch is available in version 4.11 on the 4.x branch and version 5.0-rc1 on the 5.x branch. Upgrading to a fixed version will, as a side effect, deactivate any cached sessions that may have been leaked through this bug. There are currently no known workarounds.

Affected products

• Zulip Zulip: from 4.0, before 4.11 (fixed in 4.11)

Published 2022-03-16. Last modified 2026-06-17.