CVE-2026-9711 CRITICAL

CVE-2026-9711: EventON - WordPress Virtual Event Calendar Plugin <= 5.0.11 - Unauthenticated Blind SQL Injection via Search Parameter

Vendor Eventon
Product EventON (Pro) - WordPress Virtual Event Calendar Plugin
Weakness CWE-89 · SQLi
Published June 30, 2026
Last update June 30, 2026

CVSS base score

9.8/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

The EventON - WordPress Virtual Event Calendar Plugin plugin for WordPress (full) is vulnerable to SQL Injection via the WordPress 'search' parameter in versions up to, and including, 5.0.11 due to insufficient escaping on the user supplied parameter and lack of preparation on the existing SQL query. This makes it possible for unauthenticated attackers to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database, granted the "Enable additional search queries" setting is enabled and at least one published event exists.

Explanation of Vulnerability in Simple Terms

02Summary

EventON Pro contains a SQL injection vulnerability in versions up to 5.0.11 that allows unauthenticated attackers to execute arbitrary SQL queries against the WordPress database. The vulnerability requires no user interaction and can be exploited over the network. An attacker can read, modify, or delete database contents, including user credentials and site configuration.

What an attacker can do

03Attacker Capabilities

Execute arbitrary SQL commands to read, modify, or delete WordPress database contents without authentication.

Potential impact on your site

04Site Impact

Complete compromise of the WordPress database, including user accounts, posts, and plugin settings.

Conditions required to exploit

05Prerequisites

Network access to the WordPress site; no authentication or user interaction required.

Key dates

06Disclosure timeline

June 30, 2026 CVE published