CVE-2021-27578: Apache Zeppelin

Medium severity, CVSS 6.1. EPSS: 3.2% chance of exploitation in the next 30 days.

Cross Site Scripting vulnerability in markdown interpreter of Apache Zeppelin allows an attacker to inject malicious scripts. This issue affects Apache Zeppelin Apache Zeppelin versions prior to 0.9.0.

Affected products

• Apache Zeppelin: before 0.9.0 (fixed in 0.9.0)

Published 2021-09-02. Last modified 2026-06-17.