BIT-zookeeper-2026-24281

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Import Source
https://github.com/bitnami/vulndb/tree/main/data/zookeeper/BIT-zookeeper-2026-24281.json
JSON Data
https://api.osv.dev/v1/vulns/BIT-zookeeper-2026-24281
Aliases
Published
2026-03-10T08:52:16.699Z
Modified
2026-03-10T19:55:59.337349Z
Summary
Apache ZooKeeper: Reverse-DNS fallback enables hostname verification bypass in ZooKeeper ZKTrustManager
Details

Hostname verification in Apache ZooKeeper ZKTrustManager falls back to reverse DNS (PTR) when IP SAN validation fails, allowing attackers who control or spoof PTR records to impersonate ZooKeeper servers or clients with a valid certificate for the PTR name. It's important to note that attacker must present a certificate which is trusted by ZKTrustManager which makes the attack vector harder to exploit. Users are recommended to upgrade to version 3.8.6 or 3.9.5, which fixes this issue by introducing a new configuration option to disable reverse DNS lookup in client and quorum protocols.

Database specific
{
    "severity": "Unknown",
    "cpes": [
        "cpe:2.3:a:apache:zookeeper:*:*:*:*:*:maven:*:*"
    ]
}
References

Affected packages

Bitnami / zookeeper

Package

Name
zookeeper
Purl
pkg:bitnami/zookeeper

Affected ranges

Type
SEMVER
Events
Introduced
3.8.0
Fixed
3.8.6
Introduced
3.9.0
Fixed
3.9.5

Database specific

source
"https://github.com/bitnami/vulndb/tree/main/data/zookeeper/BIT-zookeeper-2026-24281.json"