CVE-2026-27314: Apache Cassandra is vulnerable to privilege escalation in an mTLS environment using MutualTlsAuthenticator

CVE-2026-27314 · Severity: high · CVSS 8.8 · Published 2026-04-07

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.

Technologies: Apache Cassandra, org.apache.cassandra:cassandra-all (Maven). Vendors: Apache, Maven.

Quick answers

Is CVE-2026-27314 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-27314 being exploited in the wild.
How severe is CVE-2026-27314?
High severity, with a CVSS score of 8.8, published 7 April 2026.
Which products and versions are affected?
org.apache.cassandra:cassandra-all (Maven) ECOSYSTEM:introduced=5.0-alpha1,fixed=5.0.7.
Is there a fix for CVE-2026-27314?
Yes. org.apache.cassandra:cassandra-all (Maven): upgrade to 5.0.7 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2026-27314?
Check whether you run Apache Cassandra or org.apache.cassandra:cassandra-all (Maven) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • org.apache.cassandra:cassandra-all (Maven): upgrade to 5.0.7 or later
    # set org.apache.cassandra:cassandra-all to 5.0.7 in your pom.xml or build.gradle

Affected products

  • Apache Cassandra
  • org.apache.cassandra:cassandra-all (Maven) ECOSYSTEM:introduced=5.0-alpha1,fixed=5.0.7

Identifiers

  • CVE-2026-27314
  • GHSA-qxpc-96fq-wwmg

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