What is CVE-2026-42537?

CVE-2026-42537 is a critical-severity vulnerability in Apache Ranger, classified under Improper Input Validation. CVSS score: 9.8/10. Published 2026-08-10.

How severe is CVE-2026-42537?

Critical severity. CVSS v3 base score is 9.8 out of 10.

RCE in Apache Ranger

CVE-2026-42537

Remote Code Execution via JDBC URL Injection in Apache Ranger <= 2.8.0 Users are recommended to upgrade to version 2.9.0, which fixes this issue.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

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

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.013 (68.9th percentile), scored 2026-09-25.

Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 68.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.013 · change: +0.006

Affected products

Apache Ranger
Apache Software Foundation Ranger — versions 0

Weakness classification (CWE)

References

lists.apache.org/thread/ymwvz8cwv3wm8fq21pnd7fco0l1m4wrp (vendor-advisory, Mailing List, Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2026-42537?: CVE-2026-42537 is a critical-severity vulnerability in Apache Ranger, classified under Improper Input Validation. CVSS score: 9.8/10. Published 2026-08-10.
How severe is CVE-2026-42537?: Critical severity. CVSS v3 base score is 9.8 out of 10.