CVE-2023-6394

Name: CVE-2023-6394
Creator: NVD / NIST
Published: 2023-12-09T02:15:06.747+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.1/10EPSS 0.81%

Last modified Jun 17, 2026

CVE-2023-6394 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. A flaw was found in Quarkus. This issue occurs when receiving a request over websocket with no role-based permission specified on the GraphQL operation, Quarkus processes the request without authentication despite the endpoint being secured. EPSS estimates a 0.81% chance of exploitation in the next 30 days.

Description

A flaw was found in Quarkus. This issue occurs when receiving a request over websocket with no role-based permission specified on the GraphQL operation, Quarkus processes the request without authentication despite the endpoint being secured. This can allow an attacker to access information and functionality outside of normal granted API permissions.

Metrics

CVSS 3.1

9.1/10

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

EPSS Probability

0.81%

52.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Quarkus	Quarkus	< 3.6.0
Redhat	Build Of Quarkus	All versions

References

https://access.redhat.com/errata/RHSA-2023:7612
https://access.redhat.com/errata/RHSA-2023:7700
https://access.redhat.com/security/cve/CVE-2023-6394Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2252197Issue Tracking
https://access.redhat.com/errata/RHSA-2023:7612
https://access.redhat.com/security/cve/CVE-2023-6394Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2252197Issue Tracking

Timeline

Published: Dec 9, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-6394?

How severe is CVE-2023-6394?

CVE-2023-6394 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 0.81% probability of exploitation in the next 30 days.

How do I fix CVE-2023-6394?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-6394?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST