Eventin – Event Manager, Events Calendar, Event Tickets and Registrations: A security weakness
Eventin – Event Manager, Events Calendar, Event Tickets and Registrations is affected by a security weakness. The vulnerable path is reachable without authentication. The resulting impact depends on how the affected component exposes the vulnerable operation.
- Component
- Eventin – Event Manager, Events Calendar, Event Tickets and Registrations
- Affected
- See vendor advisory
- Safe version
- See mitigation notes
- Published
- Jan 09, 2026
- Weakness
- CWE-862 — Missing Authorization
This CVE was published Jan 09, 2026 and is one of 1 known issue for this plugin.
Update, patch or deactivate.
Update Eventin – Event Manager, Events Calendar, Event Tickets and Registrations to a release outside the affected range, or disable and remove it until a fixed version is available.
No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
Technical description
The Eventin – Event Manager, Events Calendar, Event Tickets and Registrations plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'post_settings' function in all versions up to, and including, 4.0.51. This makes it possible for unauthenticated attackers to modify plugin settings. Furthermore, due to insufficient input sanitization and output escaping on the 'etn_primary_color' setting, this enables unauthenticated attackers to inject arbitrary web scripts that will execute whenever a user accesses a page where Eventin styles are loaded.
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N