CVE-2026-4109

Eventin – Events Calendar, Event Booking, Ticket & Registration (AI Powered) <= 4.1.8 Missing Authorization to Authenticated (Subscriber+) Order Information Exposure

2026-04-13 18:46
Supakiad S. (m3ez)

Strategic Overview

Status
Patched in 4.1.9
Affected Plugin
Eventin – Event Calendar, Tickets, Registration, Booking & WooCommerce
Affected Version
<= 4.1.8
CVSS
4.3Medium
Weakness type
CWE-862 · Missing Authorization
CVE
CVE-2026-4109
View all Eventin – Event Calendar, Tickets, Registration, Booking & WooCommerce vulnerabilities

At a glance

CVE-2026-4109 is a medium-severity Missing Authorization vulnerability in the Eventin WordPress plugin, affecting versions <= 4.1.8. It carries a CVSS score of 4.3 (reachable over the network; low attack complexity). Exploitation requires an authenticated account at Subscriber level or above. The issue is fixed in version 4.1.9; sites on affected versions should update now. Disclosed April 2026, reported by Supakiad S. (m3ez).

Vulnerability Overview

The Eventin – Events Calendar, Event Booking, Ticket & Registration (AI Powered) plugin for WordPress is vulnerable to unauthorized access of data due to a improper capability check on the get_item_permissions_check() function in all versions up to, and including, 4.1.8. This makes it possible for authenticated attackers, with Subscriber-level access and above, to read arbitrary order data including customer PII (name, email, phone) by iterating order IDs.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user.

CWE-862: Missing Authorization

Eventin <= 4.1.8 carries this weakness at get_item_permissions_check(), and reaching it takes an account at Subscriber level or above. A missing authorization check means a function is reachable by anyone who can reach the endpoint, because the code never asks whether the caller is allowed to perform the action.

Any user who can reach the endpoint gets to run an action reserved for higher-privileged roles, from reading protected data to changing settings or content. For Eventin the fix is 4.1.9: builds <= 4.1.8 are affected, anything from 4.1.9 onward is not.

Remediation

Update to version 4.1.9, or a newer patched version

How does WordSec protect against this?

Because it turns on account access, WordSec's login security is the relevant layer: role-based two-factor, captcha and brute-force limits raise the cost of getting the account this needs. None of that substitutes for the fix: Eventin 4.1.9 closes this, and updating the plugin is the step that ends it.

  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-4109https://www.wordfence.com/threat-intel/vulnerabilities/id/87f82d5d-d89a-440d-8c23-ace5160a0739https://nvd.nist.gov/vuln/detail/CVE-2026-4109

Related records

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