CVE-2026-65942: Apache Ranger: Clients accept TLS certificates issued for other hostnames

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-10 · updated 2026-10-24
Weakness: CWE-297

Description

TLS hostname verification issue in Apache Ranger Client Code in versions <= 2.8.0. Users are recommended to upgrade to version 2.9.0, which fixes this issue.

Affected products

Apache Software Foundation Apache Ranger: before 2.9.0 — fixed in 2.9.0

How to fix

Upgrade to a fixed version: Apache Software Foundation Apache Ranger 2.9.0. Check the vendor advisory for mitigations.

References

https://lists.apache.org/thread/pp6on4yyht3z8l0ktfo1xydhjzjbn4gt
http://www.openwall.com/lists/oss-security/2026/08/09/9

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