PT-2026-93407

Name of the Vulnerable Software and Affected Versions Apache ZooKeeper versions prior to 3.8.7 Apache ZooKeeper versions prior to 3.9.6 Description Quorum TLS fails to enforce peer hostname verification in FIPS-mode deployments. When sslQuorum=true, zookeeper.fips-mode=true,...

CVE-2026-59969: Improper Validation of Certificate with Host Mismatch

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...