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CVE-2023-6394

critical

A flaw was found in Quarkus.

Vendor / product: Quarkus — quarkus

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
9.1
9.1 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Severity source: NVD CVSS v3.1 (nvd@nist.gov)
Timeline (UTC)
Published: 2023-12-09 02:15
Modified: 2026-10-20 05:16
NVD status: Modified
Last synced 2 days ago
Verified against the source API 2026-10-27 07:06 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).

Affected products

quarkus / quarkus <3.6.0
redhat / build_of_quarkus all versions

Weakness classification (CWE)

Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.

Mitigation & advisories

Vendor advisory: https://access.redhat.com/security/cve/CVE-2023-6394
Vendor advisory: https://access.redhat.com/security/cve/CVE-2023-6394

References

Data sources

NVD CVE API 2.0 — fetched 2026-10-27 07:06 UTC · record ↗

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Understanding CVEs and CVSS Scores