CVE-2026-27314: Apache Cassandra

High severity, CVSS 8.8. EPSS: 0.3% chance of exploitation in the next 30 days.

Privilege escalation in Apache Cassandra 5.0 on an mTLS environment using MutualTlsAuthenticator allows a user with only CREATE permission to associate their own certificate identity with an arbitrary role, including a superuser role, and authenticate as that role via ADD IDENTITY. Users are recommended to upgrade to version 5.0.7+, which fixes this issue.

Affected products

• Apache Cassandra: from 5.0.0, before 5.0.7 (fixed in 5.0.7)

Published 2026-04-07. Last modified 2026-06-17.