CVE-2026-13169: Unknown Eventin

High severity, CVSS 8.1. EPSS: 0.4% chance of exploitation in the next 30 days.

The Eventin WordPress plugin before 4.1.21 does not properly verify ownership of events before allowing them to be modified, deleted, or reassigned to a different author, allowing users with contributor-level access and above to alter, delete, or take over events created by other users including administrators.

Affected products

• Unknown Eventin: before 4.1.21 (fixed in 4.1.21)

Published 2026-08-19. Last modified 2026-08-26.