CVE-2026-27314 — HIGH (8.8)

Q: How severe is CVE-2026-27314?

CVE-2026-27314 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-27314?

Check the references section above for vendor advisories and patch information. Affected products include: Apache Cassandra.

Vulnerability 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.

CVSS Score

8.8

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Apache	Cassandra	>= 5.0.0, < 5.0.7

Related Weaknesses (CWE)

CWE-267

References

https://lists.apache.org/thread/zrng82ddy4rpsmfyk582v6hqxcqrbz7fMailing ListVendor Advisory
http://www.openwall.com/lists/oss-security/2026/04/07/7Mailing ListThird Party Advisory

FAQ

What is CVE-2026-27314?

CVE-2026-27314 is a vulnerability with a CVSS score of 8.8 (HIGH). 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...

How severe is CVE-2026-27314?

CVE-2026-27314 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-27314?

Check the references section above for vendor advisories and patch information. Affected products include: Apache Cassandra.