What’s Vulnerable › Vulnerabilities

CVE-2026-27314: Apache Cassandra: Privilege escalation via ADD IDENTITY authorization bypass

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-04-07 · updated 2026-10-26
• Weakness: CWE-267

Description

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 Software Foundation Apache Cassandra: from 5.0.0 before 5.0.7 — fixed in 5.0.7

How to fix

Upgrade to a fixed version: Apache Software Foundation Apache Cassandra 5.0.7. Check the vendor advisory for mitigations.

References

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

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