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)

EPSS: 0.005 (41.9th percentile) — read the EPSS interpretation.

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.

Affected products

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

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

security@apache.org (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.