CVE-2021-3967: Zulip

High severity, CVSS 8.8. EPSS: 0.8% chance of exploitation in the next 30 days.

Improper Access Control in GitHub repository zulip/zulip prior to 4.10.

Affected products

• Zulip Zulip: before 4.10 (fixed in 4.10)

Published 2022-02-26. Last modified 2026-06-17.