CVE-2026-84740
Medium
Description
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.
SeverityMedium
CVSS6.5
Exploit probability—
Product
The Events Calendar
PublishedOct 2, 2026
First seenOct 2, 2026
Weakness typeCWE-74Injection
How to fix
Update
- The Events Calendar6.17.5.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| The Events Calendar | 6.12.0 ≤ v < 6.17.5.1 | 6.17.5.1 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.