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CVE-2026-27314

Apache Cassandra privilege escalation

8.8 HIGHEPSS 0.34%
  1. Published7 Apr 2026

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 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

Apache Cassandra≥ 5.0.0 < 5.0.7

Remediation

Fixed in
Apache Cassandra≥ 5.0.7

References

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Frequently asked

Is CVE-2026-27314 being actively exploited?

CVE-2026-27314 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.34%.

How severe is CVE-2026-27314?

CVE-2026-27314 has a CVSS 3.1 base score of 8.8, rated high. EPSS estimates a 0.34% probability of exploitation.

Which products are affected by CVE-2026-27314?

Affected products include Apache Cassandra.

How do I fix CVE-2026-27314?

Upgrade affected software to a fixed version, for example Apache Cassandra 5.0.7 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-27314 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.