External risk intelligence

JetSmartFilters SQL Injection Vulnerability

CVE advisorySeverity: CRITICAL (CVSS 9.3)

CVE-2026-56067

This vulnerability exists in a WordPress plugin used to add filtering functionality to websites. Such plugins are typically installed on web servers that are intentionally exposed to the public internet to facilitate user interaction and content filtering.

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

A critical vulnerability has been identified in JetSmartFilters, a WordPress plugin, that could allow an unauthorized attacker to inject malicious SQL code. This could potentially lead to unauthorized access to sensitive data or disruption of services hosted on affected websites. The main concern at this time is to confirm if this plugin is in use within our environment and assess any potential exposure.

Unauthenticated SQL injection affects a website filtering plugin.
Critical flaw may expose sensitive data or disrupt services.
Confirm relevance and assess exposure to this plugin.

Attack Path

How an attacker could exploit the issue

An unauthenticated attacker could exploit this vulnerability by sending specially crafted input to a vulnerable component of the JetSmartFilters plugin. This could lead to unauthorized access to sensitive data or disruption of services.

No authentication required.
SQL injection via crafted input.
Potential data exposure or service disruption.

Live Threat

Current exploitation, exposure, and threat context

An unauthenticated SQL injection vulnerability in JetSmartFilters could allow an attacker to execute arbitrary SQL commands. When supported by the advisory, this could impact the integrity of the database and potentially expose sensitive information.

Database integrity and content could be affected.
Malicious SQL commands could be injected remotely.
Unauthorized access to or modification of data may occur.

Operational Fix

Recommended remediation, mitigation, and detection steps

This SQL injection vulnerability in JetSmartFilters requires immediate attention from teams managing public-facing web applications. The first step is to identify all instances of the affected plugin, confirm their exposure to the internet, assess business criticality, and assign an owner for remediation planning.

Identify and confirm affected assets.
Verify internet reachability and business impact.
Plan remediation with accountable owner.

Supplementary metadata

CVSS vector

Validate whether this threat affects your internet-facing exposure.

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Frequently asked questions

What is the JetSmartFilters plugin?

JetSmartFilters is a WordPress plugin designed to add dynamic filtering capabilities to websites. It allows site visitors to refine search results or product lists based on specific criteria. Because it handles user inputs to query database content, it must process incoming data carefully to maintain system security.

What does SQL injection mean for CVE-2026-56067?

This vulnerability falls under the CWE-89 weakness class, which happens when an application improperly handles user-provided data before passing it to a database. In this case, an attacker can input malicious SQL commands instead of valid filter parameters. The database may then execute these unintended commands, potentially granting the attacker access to information they should not be able to see.

How can an attacker trigger this vulnerability?

An attacker exploits this by sending specially crafted inputs to the plugin's filtering components. Because the flaw is unauthenticated, the attacker does not need to log in or have prior access to the website to attempt the injection. Simply browsing the site and submitting requests that interact with the vulnerable filtering functionality is sufficient to trigger the issue.

Why should I care about this vulnerability?

Halo Surface Signal notes that JetSmartFilters is often used on public-facing websites to improve user navigation. Because these websites are intentionally connected to the internet to serve visitors, the plugin is frequently reachable by anyone online. If your site uses this plugin, it is likely exposed to external, unauthenticated attackers.

Do I need to take action if I use JetSmartFilters?

Yes. First, audit your environment to locate every instance where this plugin is installed. Once identified, confirm which sites are internet-facing and determine the business importance of those assets. Assign a lead to manage the update process and ensure your database is protected from unauthorized access attempts.

References

patchstack.com/database/wordpress/plugin/jet-smart-filters/vulnerabi…

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.