CVE-2023-40560: Toolstack Schedule Posts Calendar

Medium severity, CVSS 4.8. EPSS: 0.4% chance of exploitation in the next 30 days.

Auth. (admin+) Stored Cross-Site Scripting (XSS) vulnerability in Greg Ross Schedule Posts Calendar plugin <= 5.2 versions.

Affected products

• Toolstack Schedule Posts Calendar: up to and including 5.2

Published 2023-09-06. Last modified 2026-06-17.