https://vulnerability.circl.lu/rss/recent/all/10 Most recent entries from all 2026-09-30T01:28:29.228164+00:00 Vulnerability-Lookup info@circl.lu python-feedgen Contains only the most 10 recent entries. https://vulnerability.circl.lu/vuln/cve-2026-59969 CVE-2026-59969 — Apache ZooKeeper: Improper validation of certificate with host mismatch in FIPS mode 2026-09-30T01:28:29.241346+00:00

Affected: Apache Software Foundation Apache ZooKeeper

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 peer certificate whose SAN does not match the connected host. A malicious or misissued peer certificate can therefore join quorum traffic, participate in leader election, and enter replication flows.

Users are recommended to upgrade to version 3.8.7 or 3.9.6, which fixes the issue.