The Events Calendar plugin for WordPress is vulnerable to information disclosure in versions up to, and including, 6.15.9. The sysinfo REST endpoint compares the provided key to the stored opt-in key using a loose comparison, allowing unauthenticated attackers to send a boolean value and obtain the full system report whenever "Yes, automatically share my system information with The Events Calendar support team" setting is enabled.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| The Events Calendar Plugin | — | Update the-events-calendar plugin to version 6.15.10, or a newer patched version | Nov 5, 2025 | Nov 4, 2025 |
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