[MEDIUM] Winter: Broken access control in `Cms\Controllers\Index` allows cross-template actions and unauthorized asset uploads

PKSA-m75m-ptnr-6hhr CVE-2026-32639 GHSA-5c4f-9pq9-6c77

Affected package: winter/wn-cms-module

Affected version: <=1.2.12

Reported by:
GitHub