CVE-2026-66917

IDOR + Stored XSS via Broken Object-Level Authorization in JoomGallery JoomGallery ≤ 4.3.0 — Editor-Role User Hijacks Any Gallery Image and Stores XSS Payload, Enabling Admin Session Takeover SUMMARY UserimageController::save in JoomGallery checks checkACL'edit', ... instead of checkACL'edit.own'...