CVE-2026-59969
N/A
N/A
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Apache Software Foundation | Apache ZooKeeper | 3.9.0 <= 3.9.5 | affected |
| Apache Software Foundation | Apache ZooKeeper | 3.8.0 <= 3.8.6 | affected |
Weaknesses
- CWE-297: CWE-297 Improper Validation of Certificate with Host Mismatch
ADP Enrichment
CVE Program Container
Additional References
References
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