CVE-2026-32588

Received Received - Intake

Authenticated DoS via CQL in Apache Cassandra 4.x Causes Latency

Publication date: 2026-04-07

Last updated on: 2026-04-15

Assigner: Apache Software Foundation

Description

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.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-04-07

Last Modified

2026-04-15

Generated

2026-07-06

AI Q&A

2026-04-07

EPSS Evaluated

2026-07-05

NVD

CVE-2026-32588

EUVD

EUVD-2026-19769

Affected Vendors & Products

Vendor	Product	Version / Range
apache	cassandra	From 4.0.0 (inc) to 4.0.20 (exc)
apache	cassandra	From 4.1.0 (inc) to 4.1.11 (exc)
apache	cassandra	From 5.0.0 (inc) to 5.0.7 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-400	The product does not properly control the allocation and maintenance of a limited resource.

Attack-Flow Graph

Executive Summary

This vulnerability is an authenticated Denial of Service (DoS) issue in Apache Cassandra versions 4.0, 4.1, and 5.0. It allows an authenticated user to increase query latencies by repeatedly changing their password via the Cassandra Query Language (CQL).

Impact Analysis

The impact of this vulnerability is that an authenticated user can degrade the performance of the Cassandra database by causing increased query latencies. This can lead to slower response times and potentially disrupt normal database operations, effectively causing a Denial of Service condition.

Mitigation Strategies

Users are recommended to upgrade Apache Cassandra to versions 4.0.20, 4.1.11, or 5.0.7, which fix this issue.

Compliance Impact

The provided information does not specify any impact of this vulnerability on compliance with common standards and regulations such as GDPR or HIPAA.

Detection Guidance

This vulnerability involves an authenticated denial-of-service condition caused by repeated password changes via ALTER ROLE commands over CQL in Apache Cassandra.

To detect exploitation attempts on your system, monitor for unusually high latencies or performance degradation related to CQL queries, especially those involving ALTER ROLE commands.

You can use Cassandra's query logs or audit logs to identify frequent ALTER ROLE commands executed by authenticated users.

While no specific commands are provided in the resources, a general approach could include:

Checking Cassandra logs for repeated ALTER ROLE commands: grep or search for 'ALTER ROLE' in system logs.
Monitoring query latencies using Cassandra's nodetool or metrics tools to detect spikes in query execution times.
Using CQLSH or other CQL clients to review user role changes or audit trails if enabled.

Upgrading to fixed versions (4.0.20, 4.1.11, 5.0.7) is recommended to mitigate this issue.

Hi! I’m here to help you understand CVE-2026-32588. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70