CVE-2026-40731: Mikado-Themes Chapterone

High severity, CVSS 8.1. EPSS: 0.5% chance of exploitation in the next 30 days.

Unauthenticated Local File Inclusion in ChapterOne <= 1.7 versions.

Affected products

• Mikado-Themes Chapterone: up to and including 1.7

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