Apache ZooKeeper vulnerabilities and fixes

CVEs that mention Apache ZooKeeper, ranked by priority. 2 tracked.

Apache ZooKeeper has 2 tracked vulnerabilities, 1 critical. A fixed release or vendor patch exists for 1. Most recent: 2026-06-23. Highest priority: CVE-2026-41862 (score 45/100).

• CVE-2026-41862 HIGH 8.8 UPGRADE Spring Statemachine's Kryo-based persistence backends (JPA, MongoDB, Redis and ZooKeeper) deserialise persiste
• CVE-2026-11746 CRITICAL 9.4 A vulnerability has been identified in centraldogma-server versions prior to 0.84.0, where enabling ZooKeeper

FAQ

How do I fix Apache ZooKeeper vulnerabilities?

Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.

Is Apache ZooKeeper being exploited right now?

None of the tracked Apache ZooKeeper CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.

Which Apache ZooKeeper CVE should I patch first?

CVE-2026-41862 currently ranks highest (45/100): Spring Statemachine's Kryo-based persistence backends (JPA, MongoDB, Redis and ZooKeeper) deserialise persiste.

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