CVE-2025-23015: Apache Cassandra

High severity, CVSS 8.8. EPSS: 1% chance of exploitation in the next 30 days.

Privilege Defined With Unsafe Actions vulnerability in Apache Cassandra. An user with MODIFY permission ON ALL KEYSPACES can escalate privileges to superuser within a targeted Cassandra cluster via unsafe actions to a system resource. Operators granting data MODIFY permission on all keyspaces on affected versions should review data access rules for potential breaches. This issue affects Apache Cassandra through 3.0.30, 3.11.17, 4.0.15, 4.1.7, 5.0.2. Users are recommended to upgrade to versions 3.0.31, 3.11.18, 4.0.16, 4.1.8, 5.0.3, which fixes the issue.

Affected products

• Apache Cassandra: from 3.0.0, before 3.0.31 (fixed in 3.0.31); from 3.1, before 3.11.18 (fixed in 3.11.18); from 4.0.0, before 4.0.16 (fixed in 4.0.16); from 4.1.0, before 4.1.8 (fixed in 4.1.8); from 5.0.0, before 5.0.3 (fixed in 5.0.3)

Published 2025-02-04. Last modified 2026-06-17.