External risk intelligence

Joomla YOOtheme Pro SQL Injection Vulnerability

CVE advisorySeverity: CRITICAL (CVSS 9.2)

CVE-2026-76613

The vulnerability affects a CMS extension (YOOtheme Pro) for Joomla. As an add-on for a web content management system, it is commonly deployed as part of a public-facing web application, making the vulnerable code path reachable over the internet.

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 vulnerability impacts an extension used with Joomla websites, specifically concerning how user-submitted content is handled within database queries. While the current information doesn't specify the exact business impact, a successful exploit could allow unauthorized modification of the website's data by users with contributor privileges.

A Joomla extension has a serious flaw.
It could allow unauthorized data changes.
Confirm relevance and assess exposure.

Attack Path

How an attacker could exploit the issue

An attacker could exploit this vulnerability by injecting malicious content into SQL queries. This could allow them to alter or steal data stored within the application's database.

No authentication required.
Inject content into SQL queries.
Modify or steal database information.

Live Threat

Current exploitation, exposure, and threat context

This vulnerability could allow any contributor-level user to inject malicious content into SQL queries, potentially impacting the integrity and availability of the Joomla website's data.

Sensitive database content could be exposed.
Malicious SQL queries could be executed.
Service disruption or data corruption may occur.

Operational Fix

Recommended remediation, mitigation, and detection steps

The Joomla extension, YOOtheme Pro, has a critical SQL injection vulnerability that allows any contributor-level user to inject content into SQL queries. Ownership of this issue likely falls to the platform or web application team responsible for managing the Joomla CMS and its extensions. The first practical step is to identify all instances of YOOtheme Pro within the environment, confirm their reachability and business criticality, and then identify the accountable owner to plan remediation based on the identified risk.

Platform/application team owns remediation.
Verify YOOtheme Pro presence and reachability.
Plan vendor coordination and updates.

Supplementary metadata

CVSS vector

Validate whether this threat affects your internet-facing exposure.

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Frequently asked questions

What is the YOOtheme Pro extension for Joomla?

YOOtheme Pro is a comprehensive framework and page builder extension for the Joomla content management system. It provides tools for designing website layouts, managing themes, and customizing front-end elements. Users typically install it to streamline site development and create complex visual content without needing extensive manual coding, making it a central component for managing site presentation and data display.

What does CWE-89 mean for CVE-2026-76613?

CWE-89 refers to Improper Neutralization of Special Elements used in an SQL Command, commonly known as SQL Injection. In the context of this CVE, it means the YOOtheme Pro extension fails to properly filter or sanitize input provided by users. Because the software does not securely handle this input before processing it, an attacker can insert their own SQL commands to manipulate the database directly.

How does an attacker trigger this SQL injection?

An attacker exploits this vulnerability by supplying crafted malicious input that the application then inadvertently executes as part of a database query. This issue specifically requires a user account with contributor-level privileges or higher to initiate the request. It is not triggered by anonymous visitors, as the vulnerability requires the attacker to be authenticated within the Joomla system to interact with the affected extension's functions.

Why should I be concerned about this CVE?

You should be concerned because Halo Surface Signal indicates that YOOtheme Pro is frequently deployed as part of public-facing web applications. Because these applications are reachable over the internet, a compromised or malicious account with contributor access could potentially impact the integrity of your site's entire database, leading to unauthorized data modification or theft.

What are the first steps to address this issue?

Start by identifying all environments where YOOtheme Pro is currently installed. Once you have an inventory, confirm which instances are accessible to external users and determine their business criticality. Engage your web application team to monitor for updates from the vendor and review contributor-level account access to ensure only trusted users maintain these elevated permissions until a patch is applied.

References

www.yootheme.com/

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.