CVE-2026-59969

highPriorität · verfolgen · 0EPSS 0.003 · 26. PerzentilUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.33% (26th) EPSS

CVSS 7.5 · high

Is it mine?

4 products

Prüfe deine Angriffsfläche

Who says so?

2 sources

nvd · osv

EPSS · bewertet 2026-10-27

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.

cvss

Technischer Schweregrad, 0–10. Eine Zeile je Quelle.

7.5

010

Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen⚠ Quellen uneinig · medium–high · 6.9–7.5

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:NsecondaryAusnutzbarkeit 3.9 · Auswirkung 3.6

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)

SSVC

Eine Handlungsentscheidung — aus Ausnutzung und Auswirkung.

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS

schwächen

Die CWE-Schwächeklassen, zu denen dies gehört.

CWE-297US

betroffene Produkte (4)

Betroffene Produkte und Versionsbereiche.

apache zookeeper3.8.0 → 3.8.7nvdUScpe:2.3:a:apache:zookeeper:*:*:*:*:*:*:*:*
apache zookeeper3.9.0 → 3.9.6nvdUScpe:2.3:a:apache:zookeeper:*:*:*:*:*:*:*:*
Bitnami zookeeper3.8.0 → 3.8.7osvUSpkg:bitnami/zookeeper
Bitnami zookeeper3.9.0 → 3.9.6osvUSpkg:bitnami/zookeeper

Advisories (1)

Hersteller- und Ökosystem-Meldungen dazu.

BIT-zookeeper-2026-59969Apache ZooKeeper: Improper validation of certificate with host mismatch in FIPS mode2026-09-19vendor · osvUS
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.

quellen

Welche Quellen diesen Datensatz belegen und wann.

nvd osv NVD CVE.org MITRE

veröffentlicht 2026-09-16geändert 2026-09-18

Referenzen (2) nvd

Externe Belege — Patches, Meldungen, Analysen.

http://www.openwall.com/lists/oss-security/2026/09/15/4Mailing ListThird Party Advisory
https://lists.apache.org/thread/qf9kwsgtgbgtvwls6f41281846xg0rssMailing ListVendor Advisory

scry

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