Auth bypass in N/a

CVE-2026-31266

Craft CMS 5.9.5 and earlier contains a Missing Authorization vulnerability in the migrate endpoint (/actions/app/migrate).

Vulnerability class: Broken Access Control

EPSS: 0.000 (14.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.

Affected products

N/a — versions n/a

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

Frequently asked questions

What is CVE-2026-31266?: CVE-2026-31266 is a high-severity vulnerability in N/a, classified under Missing Authorization. CVSS score: 7.3/10. Published 2026-05-27.
How severe is CVE-2026-31266?: High severity. CVSS v3 base score is 7.3 out of 10.