What is CVE-2026-32588?

CVE-2026-32588 is a medium-severity vulnerability in Apache Cassandra, classified under Uncontrolled Resource Consumption. CVSS score: 6.5/10. Published 2026-04-07.

How severe is CVE-2026-32588?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Resource exhaustion in Apache Cassandra

CVE-2026-32588

Authenticated DoS over CQL in Apache Cassandra 4.0, 4.1, 5.0 allows authenticated user to raise query latencies via repeated password changes. Users are recommended to upgrade to version 4.0.20, 4.1.11, 5.0.7, which fixes this issue.

Vulnerability class: DoS (Denial of Service)

Published 2026-04-07 · last modified 2026-10-26.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.005 (45.0th percentile), scored 2026-11-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 45.0% 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: 0.005 · change: -0.001

Affected products

Apache Cassandra
Apache Software Foundation Cassandra — versions 4.0, 4.1, 5.0

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

lists.apache.org/thread/2tnwjdnss378glxrsmnlzz3k53ftphrc (vendor-advisory, Mailing List, Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2026-32588?: CVE-2026-32588 is a medium-severity vulnerability in Apache Cassandra, classified under Uncontrolled Resource Consumption. CVSS score: 6.5/10. Published 2026-04-07.
How severe is CVE-2026-32588?: Medium severity. CVSS v3 base score is 6.5 out of 10.