9.1

CVE-2023-6394: quarkus Missing Authorization

CVSS: 9.1v3.1CriticalModified
AliasesGHSA-mvc8-6ffp-jrx5
Published 09-12-2023Last modified 20-10-2026
Open JSON

Vulnerability summary

CVE-2023-6394 is a critical (CVSS 9.1) Missing Authorization vulnerability in quarkus. EPSS estimates a 0.81% chance of exploitation in the next 30 days, higher than 56.3% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.1/10
010
Critical · v3.1 (NVD)
EPSS score
0.81%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 09-12-2023
    PublishedVulnerability first disclosed.
  2. 20-10-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.81%

Chance of exploitation in the next 30 days

Percentile

56%

Versus all other CVEs

30-day change

0.00 pp

From 0.81% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.81%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Io.quarkus1 product
  • quarkus-smallrye-graphql-client≥ 2.14.0, < 3.5.3 | < 2.13.9.Final
Quarkus1 product
Redhat1 product

3 vendors · 3 products

References

9 links