External risk intelligence

TableOn Blind SQL Injection Vulnerability

CVE advisorySeverity: CRITICAL (CVSS 9.3)

CVE-2026-42755

The vulnerability exists in a WordPress plugin used to display filterable tables on public-facing websites. As a component designed to render content directly to end-users on a web page, the vulnerable code path is inherently exposed to the public internet in standard 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 advisory addresses a critical vulnerability in the RealMag777 TableOn plugin, specifically a SQL injection flaw that could allow unauthorized access to data. The issue affects versions up to and including 1.0.5.1 and has a high severity score due to its potential for exploitation.

Enables attackers to steal database information.
Critical vulnerability impacts public-facing websites.
Confirm plugin relevance and assess exposure.

Attack Path

How an attacker could exploit the issue

An attacker can exploit this vulnerability by sending specially crafted SQL commands through a web browser to a publicly accessible website that uses the vulnerable TableOn plugin. This exposure allows the attacker to interact with the database in unintended ways, potentially leading to unauthorized access to sensitive information or manipulation of the database.

No authentication required.
Triggered via crafted SQL commands.
Risk of unauthorized data access.

Live Threat

Current exploitation, exposure, and threat context

This vulnerability could allow an unauthenticated attacker to inject malicious SQL commands through user-controllable input fields. When exploited, this could lead to unauthorized access to or manipulation of sensitive data stored in the application's database, potentially affecting the integrity and confidentiality of system information.

Database data and system information.
Via specially crafted input to the application.
Unauthorized data access or modification.

Operational Fix

Recommended remediation, mitigation, and detection steps

The application owner and the platform team are likely responsible for addressing this SQL injection vulnerability in the TableOn plugin. The first practical step is to identify all instances of the TableOn plugin, confirm its exposure and business criticality, and then assign ownership for remediation planning.

Application owners should manage this issue.
Verify TableOn plugin exposure and criticality.
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 TableOn plugin for WordPress?

TableOn is a plugin developed by RealMag777 designed to create filterable, searchable tables from posts or custom content on WordPress websites. It is typically used to help visitors organize and browse through large amounts of data directly on a web page, acting as an interface between the site's database and the end user.

What does SQL injection mean for CVE-2026-42755?

This vulnerability is classified as CWE-89, or Improper Neutralization of Special Elements used in an SQL Command. In plain terms, the plugin fails to properly clean user-provided input, allowing an attacker to inject their own database commands. This can trick the application into revealing sensitive information it was never intended to display.

How can an attacker trigger this vulnerability?

An attacker triggers this flaw by sending specially crafted input to the website, typically through the plugin's filter or search fields in a web browser. It is important to note that this does not require authentication; however, the bug is only triggered when the application processes these malicious inputs, not simply by visiting a page that uses the plugin.

Is my website at risk from this CVE?

If you use the TableOn plugin on a site accessible to the public, Halo Surface Signal identifies this as an external risk. Because the component is designed to render data directly to web users, its functions are inherently exposed to the internet. Websites that rely on this plugin to display content to anonymous visitors face a higher likelihood of this interface being targeted.

What steps should I take if I use TableOn?

Start by auditing your WordPress environment to locate all installations of the TableOn plugin. Once identified, evaluate how critical the plugin is to your current business operations. Since this is a known security weakness, contact your technical team or site administrator to discuss removing the plugin or scheduling an update to a version that is not affected by this flaw.

References

patchstack.com/database/Wordpress/Plugin/posts-table-filterable/vuln…

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.