CVE-2026-25345: Gallerycreator Simply Gallery

Critical severity, CVSS 9.9. EPSS: 0.4% chance of exploitation in the next 30 days.

Improper Validation of Specified Quantity in Input vulnerability in GalleryCreator SimpLy Gallery simply-gallery-block allows Accessing Functionality Not Properly Constrained by ACLs.This issue affects SimpLy Gallery: from n/a through <= 3.3.2.

Affected products

• Gallerycreator Simply Gallery: up to and including 3.3.2

Published 2026-03-25. Last modified 2026-06-17.