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 peer certificate whose Subject Alternative Name (SAN) does not match the connected host. This allows a malicious or misissued peer certificate to join quorum traffic, participate in leader election, and enter replication flows.