Resource exhaustion in Cassandra - CVE-2026-32588

 

Resource exhaustion in Cassandra - CVE-2026-32588

Published: April 7, 2026


Vulnerability identifier: #VU125099
CSH Severity: Low
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-32588
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote user to cause a denial of service.

The vulnerability exists due to resource consumption in ALTER ROLE password hashing when processing repeated password change requests over CQL. A remote user can issue repeated password change requests to cause a denial of service.


Affected software

Cassandra
IBM Global High Availability Mailbox

How to mitigate CVE-2026-32588

Install security update from vendor's website.

Cassandra - addressed in versions 4.0.20, 4.1.11, 5.0.7
IBM Global High Availability Mailbox - addressed in versions 6.2.0.6 6212, 6.2.0.6 6221

External References

Related Security Bulletins