# CVE-2026-109994: Eventin Events Calendar sensitive information exposure in user profile endpoint

Source: https://junglewise.ai/threats/cve-2026-109994-the-eventin-events-calendar-tickets-registration-booking  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-06. Updated: 2026-11-06  
License: CC BY 4.0 with a link back

CVE-2026-109994 · Severity: medium · CVSS 6.5 · Published 2026-11-06

Eventin is a WordPress plugin for managing events, tickets, and registrations. Attackers with a low-level subscriber account can extract email addresses and phone numbers of any WordPress user, including administrators, by exploiting a flaw in how the plugin handles user ID parameters. This exposes sensitive contact information that could be used for targeted attacks or social engineering.

Vendors: [Eventin](https://junglewise.ai/threats/vendors/eventin).

## Quick answers

**Is CVE-2026-109994 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-109994 being exploited in the wild.

**How severe is CVE-2026-109994?** Medium severity, with a CVSS score of 6.5, published 6 November 2026.

**Which products and versions are affected?** Eventin Events Calendar, Tickets, Registration, Booking & WooCommerce up to and including 4.1.29.

**Is there a fix for CVE-2026-109994?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-109994 attacked?** It is in a web application.

**Am I affected by CVE-2026-109994?** Check whether you run Eventin Events Calendar, Tickets, Registration or Booking & WooCommerce at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The plugin fails to properly validate the 'id' parameter in a user profile or data retrieval endpoint, allowing authenticated subscribers to request data for arbitrary user IDs rather than their own. By manipulating the query parameter while authenticating as a low-privilege user, an attacker can bypass ownership checks and retrieve private email addresses and phone numbers. This is an information disclosure vulnerability requiring authentication but no additional user interaction.

## Affected products

- Eventin Events Calendar, Tickets, Registration, Booking & WooCommerce up to and including 4.1.29

## Timeline

- 2026-11-06: advisory

## References

- [https://plugins.trac.wordpress.org/browser/wp-event-solution/tags/4.1.26/core/AccessControl/Ownership.php](https://plugins.trac.wordpress.org/browser/wp-event-solution/tags/4.1.26/core/AccessControl/Ownership.php)
- [https://plugins.trac.wordpress.org/browser/wp-event-solution/tags/4.1.26/core/AccessControl/Ownership.php](https://plugins.trac.wordpress.org/browser/wp-event-solution/tags/4.1.26/core/AccessControl/Ownership.php)