PatchTheCVEzookeeper vulnerabilities and fixes
Recent CVEs affecting zookeeper, with upgrade or downgrade steps. 5 tracked.
zookeeper has 5 tracked vulnerabilities, 0 critical. A fixed release or vendor patch exists for 5. Most recent: 2026-09-16. Highest priority: CVE-2026-79993 (score 48/100).
- CVE-2026-84439 MEDIUM 5.3 UPGRADE When audit logging is enabled (zookeeper.audit.enable=true), an unauthenticated attacker can inject arbitrary
- CVE-2026-79993 HIGH 7.5 UPGRADE The `deleteContainer` opcode (0x14/20) is processed without verifying the caller's ACL permissions, allowing a
- CVE-2026-59739 HIGH 7.5 UPGRADE Information disclosure via SetWatches reconnect replay in Apache ZooKeeper due to missing ACL check. An attack
- CVE-2026-84501 MEDIUM 5.3 UPGRADE An unauthenticated attacker can inject arbitrary fake log lines into Apache ZooKeeper's operational log by sen
- CVE-2026-59969 HIGH 7.5 UPGRADE Apache ZooKeeper quorum TLS fails to enforce peer hostname verification in FIPS-mode deployments
FAQ
How do I fix 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 zookeeper being exploited right now?
None of the tracked zookeeper CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.
Which zookeeper CVE should I patch first?
CVE-2026-79993 currently ranks highest (48/100): The `deleteContainer` opcode (0x14/20) is processed without verifying the caller's ACL permissions, allowing a.