CVE-2021-39234: Apache Ozone

Medium severity, CVSS 6.8. EPSS: 1.4% chance of exploitation in the next 30 days.

In Apache Ozone versions prior to 1.2.0, Authenticated users knowing the ID of an existing block can craft specific request allowing access those blocks, bypassing other security checks like ACL.

Affected products

• Apache Ozone: before 1.2.0 (fixed in 1.2.0)

Published 2021-11-19. Last modified 2026-06-17.