Joomla! CMS releases patch for environment variable exposure flaw

published: Dec. 4, 2023

Take action: The issue is not terrible but is unfortunate. Joomla has not listed exploit details but since the probability is ranked as low it means that the attacker needs to know the name of the environment variable beforehand to ask the proper exploit question. It's wise to patch, but not to rush immediately.


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The Joomla! Project has announced a security update that fixes a variable exposure flaw in the CMS. The vulnerability, tracked as CVE-2023-40626 (CVSS3 score 7.5), affects versions ranging from 1.6.0 to 4.4.0 and version 5.0.0.

This security issue originates from a defect in the process of parsing language files, presenting an opportunity for attackers to access critical environment variables. These variables typically hold sensitive information such as database access credentials, authentication keys, and server configurations. If exploited, this vulnerability could lead to unauthorized access to your Joomla! installation, endangering both your website and its data.

To remedy this issue, update to the latest secured versions: Joomla 3.10.14-elts, 4.4.1, or 5.0.1.

Joomla! CMS releases patch for environment variable exposure flaw