CVE-2026-84740
The Events Calendar WordPress plugin before 6.17.5.1 does not validate or sanitise data submitted to an unauthenticated AJAX action before merging it into its rendering context, allowing unauthenticated users to execute arbitrary shortcodes registered on the site.
- Published Oct 2, 2026
- CVSS 6.5 medium
- 0.2% chance of exploitation in the next 30 days (EPSS)
- A fix is available