Improper Access Control in Joomla! Modules by Joomla

CVE-2026-48956

What is CVE-2026-48956?

CVE-2026-48956 is a vulnerability found in Joomla!, a widely used content management system (CMS) that enables users to create and manage websites and online applications. This particular issue arises from an improper access control mechanism in Joomla!’s modules. As a result, the vulnerability allows unauthorized users to display a list of modules in the frontend, compromising the security and integrity of the web application. Such exposure can lead to unwanted information disclosure, potentially assisting attackers in further exploits targeting the system.

The implications of this vulnerability are particularly concerning for organizations that rely on Joomla! for their web presence, as it may open doors for attackers to gather information about the modules used, which could facilitate more sophisticated attacks against the site or its underlying infrastructure. Without appropriate access controls, unauthorized access could result in significant operational and reputational damage.

Potential Impact of CVE-2026-48956

1. Unauthorized Information Disclosure: The vulnerability allows malicious users to access and observe the list of modules present on the site, which can include sensitive information about the underlying architecture of the application.

2. Increased Attack Surface: With the information gathered from exploiting this vulnerability, attackers may plan further attacks, potentially targeting specific modules for exploitation, leading to a broader compromise of the application.

3. Potential for Data Breach: By understanding the components and modules of the Joomla! installation, attackers could escalate their access, leading to data breaches and loss of sensitive information, which could severely impact an organization's reputation and compliance status.

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