CVE-2026-27314

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.

Score

CVSS 3.1 8.8 High

Status

Analyzed - security@apache.org

Published

2026-04-07

Last modified

2026-10-26

Weaknesses

CWE-267

Affected products

• Cassandra (Apache)
• Apache Cassandra (Apache Software Foundation)

References

• https://lists.apache.org/thread/zrng82ddy4rpsmfyk582v6hqxcqrbz7f
• http://www.openwall.com/lists/oss-security/2026/04/07/7