What is CVE-2026-22398?

CVE-2026-22398 is a medium-severity vulnerability in Mikado-Themes Fleur, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 5.4/10. Published 2026-01-22.

How severe is CVE-2026-22398?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Auth bypass in Mikado-Themes Fleur

CVE-2026-22398

Authorization Bypass Through User-Controlled Key vulnerability in Mikado-Themes Fleur fleur allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Fleur: from n/a through <= 2.0.

Vulnerability class: IDOR (Insecure Direct Object Reference)

EPSS: 0.002 (13.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L.

Affected products

Mikado-themes Fleur — versions 0

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

audit@patchstack.com (vdb-entry)

Frequently asked questions

What is CVE-2026-22398?: CVE-2026-22398 is a medium-severity vulnerability in Mikado-Themes Fleur, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 5.4/10. Published 2026-01-22.
How severe is CVE-2026-22398?: Medium severity. CVSS v3 base score is 5.4 out of 10.