# Apache Zookeeper vulnerabilities Source: https://junglewise.ai/threats/technologies/zookeeper Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats Updated: 12 November 2026, 03:07 UTC. Rebuilt every hour. Data: https://junglewise.ai/threats/technologies/zookeeper.json License: CC BY 4.0 with a link back Junglewise Threat Intelligence has tracked 12 vulnerabilities in Apache Zookeeper: 0 in the last 7 days and 10 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-115448, was published on 4 November 2026. 5 vulnerabilities in the last four weeks, level on the four before (5). ## Counts - Last 7 days: 0 - Last 30 days: 5 - Last 90 days: 10 - All time: 12 (0 critical, 0 exploited in the wild) ## About Apache Zookeeper A centralized service for maintaining configuration information, naming, providing distributed synchronization, and providing group services. ## Latest Apache Zookeeper vulnerabilities - [CVE-2026-115448: Apache ZooKeeper uncontrolled recursion in snapshot serialization](https://junglewise.ai/threats/cve-2026-115448-uncontrolled-recursion-in-apache-zookeeper-the-server-serializes) (info, published 4 Nov 2026) - [CVE-2026-100302: Apache ZooKeeper denial of service in multiRead handler](https://junglewise.ai/threats/cve-2026-100302-allocation-of-resources-without-limits-or-throttling-in-the) (info, published 4 Nov 2026) - [CVE-2026-100300: Apache ZooKeeper quota subsystem denial of service](https://junglewise.ai/threats/cve-2026-100300-improper-handling-of-exceptional-conditions-in-the-quota) (info, published 4 Nov 2026) - [CVE-2026-100252: Apache ZooKeeper improper authorization in SASL authentication](https://junglewise.ai/threats/cve-2026-100252-improper-authorization-vulnerability-in-apache-zookeeper-when) (info, published 4 Nov 2026) - [CVE-2026-100235: Apache ZooKeeper setACL time-of-check time-of-use race condition](https://junglewise.ai/threats/cve-2026-100235-incorrect-authorization-due-to-a-time-of-check-to-time-of-use) (info, published 4 Nov 2026) - [CVE-2026-84501: Apache ZooKeeper log injection via crafted add_auth request](https://junglewise.ai/threats/cve-2026-84501-apache-zookeeper-log-injection-via-crafted-add-auth-request) (medium, CVSS 5.3, published 16 Sep 2026) - [CVE-2026-84439: Apache ZooKeeper audit log injection via tab characters](https://junglewise.ai/threats/cve-2026-84439-apache-zookeeper-audit-log-injection-via-tab-characters) (medium, CVSS 5.3, published 16 Sep 2026) - [CVE-2026-79993: Apache ZooKeeper deleteContainer ACL bypass](https://junglewise.ai/threats/cve-2026-79993-apache-zookeeper-deletecontainer-acl-bypass) (high, CVSS 7.5, published 16 Sep 2026) - [CVE-2026-59969: Apache ZooKeeper hostname verification bypass in FIPS-mode quorum TLS](https://junglewise.ai/threats/cve-2026-59969-apache-zookeeper-hostname-verification-bypass-in-fips-mode-quorum) (high, CVSS 7.5, published 16 Sep 2026) - [CVE-2026-59739: Apache ZooKeeper information disclosure in SetWatches reconnect replay](https://junglewise.ai/threats/cve-2026-59739-apache-zookeeper-information-disclosure-in-setwatches-reconnect) (high, CVSS 7.5, published 16 Sep 2026) - [CVE-2026-24308: Apache ZooKeeper sensitive information disclosure in ZKConfig log output](https://junglewise.ai/threats/cve-2026-24308-apache-zookeeper-sensitive-information-disclosure-in-zkconfig-log) (high, CVSS 7.5, published 7 Mar 2026) - [CVE-2026-24281: Apache ZooKeeper hostname verification bypass in ZKTrustManager](https://junglewise.ai/threats/cve-2026-24281-apache-zookeeper-hostname-verification-bypass-in-zktrustmanager) (high, CVSS 7.4, published 7 Mar 2026) ## Most severe Apache Zookeeper vulnerabilities - [CVE-2026-24308: Apache ZooKeeper sensitive information disclosure in ZKConfig log output](https://junglewise.ai/threats/cve-2026-24308-apache-zookeeper-sensitive-information-disclosure-in-zkconfig-log) (high, CVSS 7.5, published 7 Mar 2026) - [CVE-2026-79993: Apache ZooKeeper deleteContainer ACL bypass](https://junglewise.ai/threats/cve-2026-79993-apache-zookeeper-deletecontainer-acl-bypass) (high, CVSS 7.5, published 16 Sep 2026) - [CVE-2026-59739: Apache ZooKeeper information disclosure in SetWatches reconnect replay](https://junglewise.ai/threats/cve-2026-59739-apache-zookeeper-information-disclosure-in-setwatches-reconnect) (high, CVSS 7.5, published 16 Sep 2026) - [CVE-2026-59969: Apache ZooKeeper hostname verification bypass in FIPS-mode quorum TLS](https://junglewise.ai/threats/cve-2026-59969-apache-zookeeper-hostname-verification-bypass-in-fips-mode-quorum) (high, CVSS 7.5, published 16 Sep 2026) - [CVE-2026-24281: Apache ZooKeeper hostname verification bypass in ZKTrustManager](https://junglewise.ai/threats/cve-2026-24281-apache-zookeeper-hostname-verification-bypass-in-zktrustmanager) (high, CVSS 7.4, published 7 Mar 2026) - [CVE-2026-84501: Apache ZooKeeper log injection via crafted add_auth request](https://junglewise.ai/threats/cve-2026-84501-apache-zookeeper-log-injection-via-crafted-add-auth-request) (medium, CVSS 5.3, published 16 Sep 2026) - [CVE-2026-84439: Apache ZooKeeper audit log injection via tab characters](https://junglewise.ai/threats/cve-2026-84439-apache-zookeeper-audit-log-injection-via-tab-characters) (medium, CVSS 5.3, published 16 Sep 2026) - [CVE-2026-115448: Apache ZooKeeper uncontrolled recursion in snapshot serialization](https://junglewise.ai/threats/cve-2026-115448-uncontrolled-recursion-in-apache-zookeeper-the-server-serializes) (info, published 4 Nov 2026) - [CVE-2026-100302: Apache ZooKeeper denial of service in multiRead handler](https://junglewise.ai/threats/cve-2026-100302-allocation-of-resources-without-limits-or-throttling-in-the) (info, published 4 Nov 2026) - [CVE-2026-100300: Apache ZooKeeper quota subsystem denial of service](https://junglewise.ai/threats/cve-2026-100300-improper-handling-of-exceptional-conditions-in-the-quota) (info, published 4 Nov 2026) ## Vulnerabilities per week 5 vulnerabilities in the last four weeks, level on the four before (5). | Week of | Vulns | Critical | Exploited | | --- | --- | --- | --- | | 17 Aug 2026 | 0 | 0 | 0 | | 24 Aug 2026 | 0 | 0 | 0 | | 31 Aug 2026 | 0 | 0 | 0 | | 7 Sep 2026 | 0 | 0 | 0 | | 14 Sep 2026 | 5 | 0 | 0 | | 21 Sep 2026 | 0 | 0 | 0 | | 28 Sep 2026 | 0 | 0 | 0 | | 5 Oct 2026 | 0 | 0 | 0 | | 12 Oct 2026 | 0 | 0 | 0 | | 19 Oct 2026 | 0 | 0 | 0 | | 26 Oct 2026 | 0 | 0 | 0 | | 2 Nov 2026 | 5 | 0 | 0 | | 9 Nov 2026 | 0 | 0 | 0 | ## Other Apache technologies - [Apache Airflow](https://junglewise.ai/threats/technologies/airflow): 95 vulnerabilities - [Apache Camel](https://junglewise.ai/threats/technologies/camel): 87 vulnerabilities - [Apache Tomcat](https://junglewise.ai/threats/technologies/tomcat): 87 vulnerabilities - [Apache Thrift](https://junglewise.ai/threats/technologies/thrift): 77 vulnerabilities - [Apache Ofbiz](https://junglewise.ai/threats/technologies/ofbiz): 67 vulnerabilities - [Apache HTTP Server](https://junglewise.ai/threats/technologies/http-server): 62 vulnerabilities - [Apache Traffic Server](https://junglewise.ai/threats/technologies/traffic-server): 55 vulnerabilities - [Apache Brpc](https://junglewise.ai/threats/technologies/brpc): 36 vulnerabilities - [Apache Roller](https://junglewise.ai/threats/technologies/roller): 30 vulnerabilities - [Apache CloudStack](https://junglewise.ai/threats/technologies/cloudstack): 28 vulnerabilities - [Apache ActiveMQ](https://junglewise.ai/threats/technologies/activemq): 27 vulnerabilities - [Apache Apisix](https://junglewise.ai/threats/technologies/apisix): 27 vulnerabilities ## Sources NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Apache Zookeeper vulnerabilities", https://junglewise.ai/threats/technologies/zookeeper, 12 November 2026.