Craft CMS 5.9.5 and earlier contains a Missing Authorization vulnerability in the migrate endpoint (/actions/app/migrate).
https://github.com/craftcms/cms
https://github.com/0xrixet/cms-security-poc
https://github.com/0xrixet/Craftcms-PoC-CVE-2026-31266
Source: Mitre, NVD
Published: 2026-05-27
Updated: 2026-05-27
Base Score: 6.4
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N
Severity: Medium
Base Score: 7.3
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Severity: High