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Vulnerabilities of Apache Software Foundation Apache ZooKeeper

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CVE Summary Score Published
CVE-2026-100302 Apache ZooKeeper: Denial of service through unbounded memory allocation in multiRead request handling 7.1 High Nov 4, 2026
CVE-2026-115448 Apache ZooKeeper: Unbounded recursion in snapshot serialization allows a client to render the server unrecoverable 8.7 High Nov 4, 2026
CVE-2026-100300 Apache ZooKeeper: Unauthenticated persistent denial of service via unvalidated quota-node data and paths crashing the transaction-apply thread 8.7 High Nov 4, 2026
CVE-2026-100252 Apache ZooKeeper: SASL authorization bypass on the client port through a client-supplied authorization ID 8.6 High Nov 4, 2026
CVE-2026-100235 Apache ZooKeeper: ACL enforcement bypass allows unauthorized operations to commit after an ACL revocation 6.0 Medium Nov 4, 2026
CVE-2026-84501 An unauthenticated attacker can inject arbitrary fake log lines into Apache ZooKeeper's operational log by sending a… Not rated Sep 16, 2026
CVE-2026-84439 When audit logging is enabled (zookeeper.audit.enable=true), an unauthenticated attacker can inject arbitrary fields… Not rated Sep 16, 2026
CVE-2026-79993 The `deleteContainer` opcode (0x14/20) is processed without verifying the caller's ACL permissions, allowing any… Not rated Sep 16, 2026
CVE-2026-59969 Apache ZooKeeper quorum TLS fails to enforce peer hostname verification in FIPS-mode deployments Not rated Sep 16, 2026
CVE-2026-59739 Information disclosure via SetWatches reconnect replay in Apache ZooKeeper due to missing ACL check. An attacker can… Not rated Sep 16, 2026
CVE-2026-24308 Improper handling of configuration values in ZKConfig in Apache ZooKeeper 3.8.5 and 3.9.4 on all platforms allows an… Not rated Mar 7, 2026
CVE-2026-24281 Hostname verification in Apache ZooKeeper ZKTrustManager falls back to reverse DNS (PTR) when IP SAN validation fails,… Not rated Mar 7, 2026
CVE-2025-58457 Improper permission check in ZooKeeper AdminServer lets authorized clients to run snapshot and restore command with… Not rated Sep 24, 2025
CVE-2024-51504 When using IPAuthenticationProvider in ZooKeeper Admin Server there is a possibility of Authentication Bypass by… Not rated Nov 7, 2024
CVE-2024-23944 Information disclosure in persistent watchers handling in Apache ZooKeeper due to missing ACL check Not rated Mar 15, 2024
CVE-2023-44981 Authorization Bypass Through User-Controlled Key vulnerability in Apache ZooKeeper Not rated Oct 11, 2023
CVE-2019-0201 An issue is present in Apache ZooKeeper 1.0.0 to 3.4.13 and 3.5.0-alpha to 3.5.4-beta Not rated May 23, 2019
CVE-2018-8012 No authentication/authorization is enforced when a server attempts to join a quorum in Apache ZooKeeper before 3.4.10,… Not rated May 21, 2018
CVE-2017-5637 Two four letter word commands "wchp/wchc" are CPU intensive and could cause spike of CPU utilization on Apache ZooKeeper… Not rated Oct 10, 2017

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