External risk intelligence

Participants Database Blind SQL Injection Vulnerability.

CVE advisorySeverity: CRITICAL (CVSS 9.3)

CVE-2026-112860

The vulnerability exists in a WordPress plugin designed to manage and display user participants. Such plugins are typically deployed on web servers to be accessed by public web traffic, making the database interaction points inherently exposed to internet-based requests in common deployment scenarios.

SQL Injection

Halo Surface Signal: 4 out of 5 — likely to be public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

This CVE describes a critical SQL injection vulnerability in a participant database plugin that could allow unauthorized access to sensitive information. The issue stems from improper handling of special characters within SQL commands, making it possible for attackers to manipulate database queries. The main concern is confirming relevance and exposure to our systems.

A database plugin has a critical security flaw.
It could expose sensitive participant data.
Confirm relevance and understand exposure.

Attack Path

How an attacker could exploit the issue

An attacker could target the Participants Database by sending specially crafted web requests. Because the vulnerability doesn't require any special privileges, an attacker could reach it over the network. This could allow them to manipulate the database and access sensitive participant information.

Accessible over the network.
Triggered via crafted web requests.
Risk of sensitive data exposure.

Live Threat

Current exploitation, exposure, and threat context

This vulnerability could allow an unauthenticated attacker to inject malicious SQL commands through the Participants Database, potentially leading to the exposure of sensitive information stored within the database. This could occur when the application improperly handles user-supplied input in SQL queries, allowing an attacker to manipulate the database's behavior.

Sensitive database information could be exposed.
Unauthenticated user input could be malformed.
Unauthorized access to private data.

Operational Fix

Recommended remediation, mitigation, and detection steps

This SQL injection vulnerability in the Participants Database plugin necessitates a coordinated response. The primary responsibility likely falls on the application owners who manage the WordPress instances, in conjunction with infrastructure or platform teams responsible for the underlying hosting environment. The first practical step is to identify all deployments of the Participants Database plugin, confirm their internet reachability, and assess business criticality to prioritize remediation efforts.

Application owners should own the issue.
Verify plugin presence and external exposure.
Plan remediation based on identified risk.

Supplementary metadata

CVSS vector

Validate whether this threat affects your internet-facing exposure.

Halo Threat Intelligence helps prioritize remediation with Halo Surface Signal and H/A/L/O context. Start exposure validation with a free external attack surface trial.

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Frequently asked questions

What is the Participants Database plugin used for?

Participants Database is a WordPress plugin designed to help site administrators collect, manage, and display lists of people or members. It acts as a specialized database manager within a WordPress environment, allowing users to create forms and maintain structured records of individuals, which are often displayed on a website for public or registered user viewing.

What does SQL injection mean for CVE-2026-112860?

This CVE involves a vulnerability class known as SQL Injection (CWE-89). It means the plugin fails to properly filter or neutralize user-supplied input before using it in database commands. Because of this, an attacker can input specially crafted text to 'trick' the database, allowing them to extract sensitive information that they are not authorized to see.

How is this Participants Database vulnerability triggered?

An attacker triggers this flaw by sending a specially crafted web request to the server hosting the plugin. Since the vulnerability is a form of Blind SQL Injection, it does not require the attacker to have an account or administrative privileges on your site. Note that simply visiting the site normally will not trigger the bug; it requires specific, malicious input designed to manipulate database queries.

Do I need to worry if my site is internal-only?

According to Halo Surface Signal, this vulnerability is classified as external because the plugin is typically used to handle public web traffic. If your instance is truly isolated from the internet, your risk profile is lower; however, any system accessible to public network traffic is a primary target. You should assume that any web-facing instance of this plugin is potentially reachable by an attacker.

What should I do first to address this threat?

Your first step is to perform an inventory of all WordPress instances in your environment to identify where the Participants Database plugin is installed. Once you have a list of affected systems, prioritize those that are internet-facing. Confirming the plugin's presence and its exposure to the public web will help you determine the urgency of your patching or mitigation efforts.

References

patchstack.com/database/wordpress/plugin/participants-database/vulne…

Written by Nicholas Merritt

Nicholas Merritt is VP of Security Solutions at Halo Security. With more than 25 years across application security, vulnerability prioritization, and offensive security, he helps teams translate threat data into practical exposure validation and remediation focus. He authors Halo Threat Intelligence CVE advisories using Halo Surface Signal and H/A/L/O context to prioritize internet-facing risk.