What is CVE-2026-65942?

CVE-2026-65942 is a high-severity vulnerability in Apache Ranger, classified under Improper Validation of Certificate with Host Mismatch. CVSS score: 7.5/10. Published 2026-08-10.

How severe is CVE-2026-65942?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Apache Ranger

CVE-2026-65942

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.

Published 2026-08-10 · last modified 2026-08-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.003 (26.8th percentile), scored 2026-09-24.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 27th percentile — 26.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Apache Ranger
Apache Software Foundation Ranger — versions 0

Weakness classification (CWE)

CWE-297 — Improper Validation of Certificate with Host Mismatch

References

lists.apache.org/thread/pp6on4yyht3z8l0ktfo1xydhjzjbn4gt (vendor-advisory, Mailing List, Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2026-65942?: CVE-2026-65942 is a high-severity vulnerability in Apache Ranger, classified under Improper Validation of Certificate with Host Mismatch. CVSS score: 7.5/10. Published 2026-08-10.
How severe is CVE-2026-65942?: High severity. CVSS v3 base score is 7.5 out of 10.