CVE-2025-3527 MEDIUM

CVE-2025-3527: EventON - WordPress Virtual Event Calendar Plugin <= 4.9.6 - Missing Authorization to Authenticated (Subscriber+) Stored Cross-Site Scripting

Vendor Eventon
Product EventON (Pro) - WordPress Virtual Event Calendar Plugin
Weakness CWE-862 · Missing authorization
Published May 17, 2025
Last update April 8, 2026

CVSS base score

6.4/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality Low
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

What the vulnerability does

01Description

The EventON Pro plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check in the 'assets/lib/settings/settings.js' file in all versions up to, and including, 4.9.6. This makes it possible for authenticated attackers, with Subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The vulnerability was partially patched in version 4.9.6.

Explanation of Vulnerability in Simple Terms

02Summary

EventON Pro versions up to 4.9.6 lack proper authorization checks on certain administrative functions. A logged-in user with low privileges can access or modify data they should not have permission to view or change. The vulnerability affects the scope beyond the plugin itself, potentially impacting other site components. Update to a version newer than 4.9.6.

What an attacker can do

03Attacker Capabilities

Access or modify event data and settings without proper authorization.

Potential impact on your site

04Site Impact

Unauthorized users can view or alter event information, potentially disrupting calendar functionality or exposing sensitive event details.

Conditions required to exploit

05Prerequisites

Attacker must have a low-privilege WordPress user account (e.g., subscriber or contributor).

Key dates

06Disclosure timeline

May 17, 2025 CVE published
April 8, 2026 Record updated