CVE-2018-8012: Apache Zookeeper

High severity, CVSS 7.5. EPSS: 8.5% chance of exploitation in the next 30 days.

No authentication/authorization is enforced when a server attempts to join a quorum in Apache ZooKeeper before 3.4.10, and 3.5.0-alpha through 3.5.3-beta. As a result an arbitrary end point could join the cluster and begin propagating counterfeit changes to the leader.

Affected products

• Apache Zookeeper: before 3.4.10 (fixed in 3.4.10); from 3.5.0, up to and including 3.5.3; version 3.5.0 only; version 3.5.3 only
• Debian Debian Linux: version 8.0 only; version 9.0 only
• Oracle Goldengate Stream Analytics: before 19.1.0.0.1 (fixed in 19.1.0.0.1)

Published 2018-05-21. Last modified 2026-06-17.