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Advisory record · GHSA-qxpc-96fq-wwmg

Apache Cassandra is vulnerable to privilege escalation in an mTLS environment using MutualTlsAuthenticator

CVSS 8.8 HighEPSS 0.0027 · 19th percentile

Published by the GitHub Advisory Database at 7 Apr 2026, 18:31 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
org.apache.cassandra:cassandra-allMaven>=5.0-alpha1, <5.0.75.0.7
Identifiers
GHSA-qxpc-96fq-wwmg · CVE-2026-27314
Weakness (CWE)
CWE-267
Tags
Published
7 Apr 2026
Updated
8 Apr 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Apache Cassandra (org.apache.cassandra:cassandra-all) versions 5.0-alpha1 up to but not including 5.0.7 are vulnerable. An authenticated user with only CREATE permission in an mTLS environment using MutualTlsAuthenticator can link their own certificate identity to an arbitrary role, including a superuser role, and then log in as that role. Upgrade to version 5.0.7 or later, which fixes the issue.

Written 3 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
8.8 High 3.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H GitHub Advisory Database
  • CISA KEV Not listed.
  • EPSS 0.0027, the 19th percentile, on 11 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:20 UTC First seen by agentprime
  2. 31 Oct 2026, 14:20 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.