CVE-2025-26467: apache software foundation apache cassandra Privilege Defined With Unsafe Actions

Vulnerability summary

CVE-2025-26467 is a high (CVSS 8.8) Privilege Defined With Unsafe Actions vulnerability in apache software foundation apache cassandra. EPSS estimates a 0.52% chance of exploitation in the next 30 days, higher than 42.5% of scored vulnerabilities.

Timeline

1. 25-08-2025
   PublishedVulnerability first disclosed.
2. 26-02-2026
   Last modifiedVulnerability information updated.

Description

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 3.0.30, 3.11.17, 4.0.16, 4.1.7, 5.0.2, but this advisory is only for 4.0.16 because the fix to CVE-2025-23015 was incorrectly applied to 4.0.16, so that version is still affected. Users in the 4.0 series are recommended to upgrade to version 4.0.17 which fixes the issue. Users from 3.0, 3.11, 4.1 and 5.0 series should follow recommendation from CVE-2025-23015.

• CWE-267Privilege Defined With Unsafe ActionsA particular privilege, role, capability, or right can be used to perform unsafe actions that were not intended, even when it is assigned to the correct entity.