BIT-ZOOKEEPER-2026-84501 Apache ZooKeeper: Operational log forgery via newline injection in EnsembleAuthenticationProvider

An unauthenticated attacker can inject arbitrary fake log lines into Apache ZooKeeper's operational log by sending a crafted addauth"ensemble", ... request containing newline characters \n. When the ensemble name doesn't match, EnsembleAuthenticationProvider.handleAuthentication logs the raw,...

BIT-ZOOKEEPER-2026-84439 Apache ZooKeeper: Audit log injection via unsanitized output from multiple sources

When audit logging is enabled zookeeper.audit.enable=true, an unauthenticated attacker can inject arbitrary fields into Apache ZooKeeper's audit log by sending a digest authentication request with tab characters \t embedded in the username. Because the audit log uses tab-separated key=value forma...

BIT-ZOOKEEPER-2026-79993 Apache ZooKeeper: Missing ACL check on deleteContainer opcode allows unauthorized deletion of any empty persistent/container znode

The deleteContainer opcode 0x14/20 is processed without verifying the caller's ACL permissions, allowing any authenticated client to delete specific znodes in the data tree regardless of the ACL restrictions on the znode or its parent. This opcode is considered internal-only and the official clie...

BIT-ZOOKEEPER-2026-59969 Apache ZooKeeper: Improper validation of certificate with host mismatch in FIPS mode

Apache ZooKeeper quorum TLS fails to enforce peer hostname verification in FIPS-mode deployments. When sslQuorum=true, zookeeper.fips-mode=true, ssl.quorum.hostnameVerification=true, and ssl.quorum.clientHostnameVerification=true are enabled, the Java SSLSocket quorum path accepts a CA-trusted pe...

BIT-ZOOKEEPER-2026-59739 Apache ZooKeeper: Information disclosure via SetWatches reconnect replay

Information disclosure via SetWatches reconnect replay in Apache ZooKeeper due to missing ACL check. An attacker can discover ACL-restricted paths by registering exists-watches on non-existent paths, then reconnecting after the paths are created with restricted ACLs. Issue is caused by incomplete...

CLEANSTART-2026-CD76162 Security fix for CVE-2025-13151 applied in: apache-zookeeper 3.7.2-r4

Security vulnerability affects the apache-zookeeper package. This issue is resolved in later releases. See references for vulnerability details...

Apache ZooKeeper 3.8.x < 3.8.7 / 3.9.x < 3.9.6 Multiple Vulnerabilities

The version of Apache ZooKeeper listening on the remote host is 3.8.x prior to 3.8.7 or 3.9.x prior to 3.9.6. It is, therefore, affected by multiple vulnerabilities: - Information disclosure via SetWatches reconnect replay due to a missing ACL check. An attacker can discover ACL-restricted paths ...

Linux Distros Unpatched Vulnerability : CVE-2026-59969

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Apache ZooKeeper quorum TLS fails to enforce peer hostname verification in FIPS-mode deployments. When sslQuorum=true, zookeeper.fips-mode=true,...

CVE-2026-59969

Apache ZooKeeper quorum TLS fails to enforce peer hostname verificatio...

CVE-2026-59739

Information disclosure via SetWatches reconnect replay in Apache ZooKe...

Linux Distros Unpatched Vulnerability : CVE-2026-59739

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Information disclosure via SetWatches reconnect replay in Apache ZooKeeper due to missing ACL check. An attacker can discover ACL-restricted paths by registerin...

Linux Distros Unpatched Vulnerability : CVE-2026-79993

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - The deleteContainer opcode 0x14/20 is processed without verifying the caller's ACL permissions, allowing any authenticated client to delete specific znodes in t...

Linux Distros Unpatched Vulnerability : CVE-2026-84501

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - An unauthenticated attacker can inject arbitrary fake log lines into Apache ZooKeeper's operational log by sending a crafted addauthensemble, ... request...

UBUNTU-CVE-2026-59739

Information disclosure via SetWatches reconnect replay in Apache ZooKe...

UBUNTU-CVE-2026-59969

Apache ZooKeeper quorum TLS fails to enforce peer hostname verificatio...

Linux Distros Unpatched Vulnerability : CVE-2026-84439

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - When audit logging is enabled zookeeper.audit.enable=true, an unauthenticated attacker can inject arbitrary fields into Apache ZooKeeper's audit log by sending ...

DEBIAN-CVE-2026-79993

The deleteContainer opcode 0x14/20 is processed without verifying the caller's ACL permissions, allowing any authenticated client to delete specific znodes in the data tree regardless of the ACL restrictions on the znode or its parent. This opcode is considered internal-only and the official clie...

CVE-2026-79993

The deleteContainer opcode 0x14/20 is processed without verifying the caller's ACL permissions, allowing any authenticated client to delete specific znodes in the data tree regardless of the ACL restrictions on the znode or its parent. This opcode is considered internal-only and the official clie...

CVE-2026-84501

An unauthenticated attacker can inject arbitrary fake log lines into Apache ZooKeeper's operational log by sending a crafted addauth"ensemble", ... request containing newline characters \n. When the ensemble name doesn't match, EnsembleAuthenticationProvider.handleAuthentication logs the raw,...

DEBIAN-CVE-2026-84439

When audit logging is enabled zookeeper.audit.enable=true, an unauthenticated attacker can inject arbitrary fields into Apache ZooKeeper's audit log by sending a digest authentication request with tab characters \t embedded in the username. Because the audit log uses tab-separated key=value forma...