Java CVE-2026-59969

CRITICAL

2026-09-15

Apache Java Information Disclosure

Lifecycle Timeline

Analysis Generated

Sep 15, 2026 - 20:16 vuln.today

CVE Published

Sep 15, 2026 - 18:23 oss-security

CRITICAL

Description PRE-NVD

Disclosed via oss-security. NVD scoring and full description are pending.

Articles & Coverage 1

News We need answer only title. Need generate concise SEO-friendly article title about vulnerability. Format "Critical/High [Vulnerability Type] in [Product] - [CVE-ID]". Given CVE-2026-59969, Product: Java, Severity CRITICAL, Summary about Apache ZooKeeper quorum TLS peers FIPS mode skip hostname verification, rogue peer join quorum etc. Need title max 100 chars. Return ONLY title. Need infer vulnerability type. It's improper certificate hostname verification / TLS hostname verification bypass. Product? The prompt says Product: Sep 15, 2026

AnalysisAI

Apache ZooKeeper quorum TLS peers running in FIPS mode can skip hostname verification, so a certificate whose SAN does not match the connected host is still accepted, letting a rogue peer join quorum traffic, participate in leader election, and enter replication flows. The flaw affects org.apache.zookeeper:zookeeper 3.8.0 through 3.8.6 and 3.9.0 through 3.9.5, but only in deployments where sslQuorum=true, zookeeper.fips-mode=true, and both ssl.quorum.hostnameVerification and ssl.quorum.clientHostnameVerification are enabled. …

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CVE-2026-59969 vulnerability details – vuln.today

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