CVE-2026-24281

HIGH

7.4

Description

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.

Details CVE

Score CVSS v3.17.4

SeveriteHIGH

Vecteur CVSSCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Vecteur d'attaqueNETWORK

ComplexiteHIGH

Privileges requisNONE

Interaction utilisateurNONE

Publie3/7/2026

Derniere modification3/10/2026

Sourcenvd

Observations honeypot0

Produits affectes

apache:zookeeper

Faiblesses (CWE)

CWE-295CWE-350CWE-295

References

https://lists.apache.org/thread/088ddsbrzhd5lxzbqf5n24yg0mwh9jt2(security@apache.org)

http://www.openwall.com/lists/oss-security/2026/03/07/4(af854a3a-2127-422b-91ae-364da2661108)

Correlations IOC

Aucune correlation enregistree

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