CVE-2026-27314: Cassandra all Apache Cassandra Is Vulnerable To Vulnerability

HIGH
Advisory Identifier: GHSA-qxpc-96fq-wwmg
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CVSS 8.8
CWE-267
Published
Advisory Summary

CVE-2026-27314 is a HIGH (CVSS 8.8) apache cassandra is vulnerable to vulnerability (CWE-267: Privilege Defined With Unsafe Actions) affecting Cassandra all libraries in the Maven ecosystem. The issue involves apache cassandra is vulnerable to privilege escalation in an mtls environment using mutualtlsauthenticator. Remediation is available by upgrading affected packages to version 5.0.7.

CVE-2026-27314 at a Glance

CVE Identifier CVE-2026-27314
GHSA Identifier GHSA-qxpc-96fq-wwmg
Severity HIGH
CVSS v3.1 Base Score 8.8
CWE Classification CWE-267: Privilege Defined With Unsafe Actions
Affected Product Cassandra all
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 8.8

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2026-27314

To remediate this vulnerability, upgrade all affected Cassandra all dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

org.apache.cassandra:cassandra-all fixed: 5.0.7 
<dependency>
    <groupId>org.apache.cassandra</groupId>
    <artifactId>cassandra-all</artifactId>
    <version>5.0.7</version>
</dependency>
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree -Dincludes=org.apache.cassandra

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2026-27314, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=org.apache.cassandra

Analyze the terminal output to locate any version of Cassandra all in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 5.0.7), your application is affected.

Note: The mvn dependency:tree -Dincludes=org.apache.cassandra command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-267: Privilege Defined With Unsafe Actions, where a particular privilege, role, capability, or right can be used to perform unsafe actions that were not intended, even when it is assigned to the correct entity. In Cassandra all, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

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.

CVE-2026-27314 Affected Cassandra all Versions

1 component(s)
Fixed Versions:
5.0.7
Product / Package Ecosystem Affected Versions Fixed Version
org.apache.cassandra:cassandra-all
maven/org.apache.cassandra/cassandra-all
Maven
≥ 5.0-alpha1
< 5.0.7
5.0.7

References

NVD — CVE-2026-27314 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-27314
Security Fix Commit FIX COMMIT
https://github.com/apache/cassandra/commit/b584a435970e5125e1def5148d943c39569dc7af
Cassandra all Source Repository REPOSITORY
https://github.com/apache/cassandra
Cassandra all Release RELEASE
https://github.com/apache/cassandra/releases/tag/cassandra-5.0.7
lists.apache.org/thread/zrng82ddy4rp... WEB
https://lists.apache.org/thread/zrng82ddy4rpsmfyk582v6hqxcqrbz7f
Cassandra all Security Information SECURITY
http://www.openwall.com/lists/oss-security/2026/04/07/7

Frequently Asked Questions

What is CVE-2026-27314?
CVE-2026-27314 is a security vulnerability in Cassandra all involving Apache Cassandra is vulnerable to privilege escalation in an mTLS environment using MutualTlsAuthenticator under CWE-267: Privilege Defined With Unsafe Actions.
Which Cassandra all versions are affected?
Affected versions include releases prior to 5.0.7 across affected packages: org.apache.cassandra:cassandra-all.
What version fixes CVE-2026-27314?
Upgrading to 5.0.7 (or the latest patched release for your respective branch) resolves the vulnerability.
Is cassandra-all affected?
Yes, org.apache.cassandra:cassandra-all is affected in releases prior to 5.0.7. Upgrade your dependency to 5.0.7 or later.
What is the CVSS score of CVE-2026-27314?
CVE-2026-27314 has a CVSS v3.1 base score of 8.8 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-27314?
CVE-2026-27314 is classified under CWE-267: Privilege Defined With Unsafe Actions (A particular privilege, role, capability, or right can be used to perform unsafe actions that were not intended, even when it is assigned to the correct entity.).
How can I check Maven dependencies for CVE-2026-27314?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.apache.cassandra'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-qxpc-96fq-wwmg",
  "modified" : "2026-04-08T19:22:39Z",
  "published" : "2026-04-07T18:31:37Z",
  "aliases" : [ "CVE-2026-27314" ],
  "summary" : "Apache Cassandra is vulnerable to privilege escalation in an mTLS environment using MutualTlsAuthenticator",
  "details" : "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.\n\nUsers are recommended to upgrade to version 5.0.7+, which fixes this issue.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.apache.cassandra:cassandra-all"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "5.0-alpha1"
      }, {
        "fixed" : "5.0.7"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-27314"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/apache/cassandra/commit/b584a435970e5125e1def5148d943c39569dc7af"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/apache/cassandra"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/apache/cassandra/releases/tag/cassandra-5.0.7"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread/zrng82ddy4rpsmfyk582v6hqxcqrbz7f"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2026/04/07/7"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-267" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-04-08T19:22:39Z",
    "nvd_published_at" : "2026-04-07T17:16:27Z"
  }
}