EventON Plugin up to 5.0.11 on WordPress Setting Search sql injection

Summaryinfo

A vulnerability identified as critical has been detected in EventON Plugin up to 5.0.11 on WordPress. Affected by this vulnerability is an unknown functionality of the component Setting Handler. This manipulation of the argument Search causes sql injection. This vulnerability appears as CVE-2026-9711. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability was found in EventON Plugin up to 5.0.11 on WordPress. It has been declared as critical. Affected by this vulnerability is some unknown functionality of the component Setting Handler. The manipulation of the argument search with an unknown input leads to a sql injection vulnerability. The CWE definition for the vulnerability is CWE-89. The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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.

The weakness was presented by Nguyen Ngoc Duc. It is possible to read the advisory at wordfence.com. This vulnerability is known as CVE-2026-9711 since 05/27/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 06/30/2026). The attack technique deployed by this issue is T1505 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-40273). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• WordPress Plugin

Name

• EventON Plugin

Version

• 5.0.0
• 5.0.1
• 5.0.2
• 5.0.3
• 5.0.4
• 5.0.5
• 5.0.6
• 5.0.7
• 5.0.8
• 5.0.9
• 5.0.10
• 5.0.11

CPE 2.3info

• 🔒
• 🔒
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CPE 2.2info

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Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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