SummaryThis advisory addresses a security vulnerability in Mautic where sensitive .env configuration files may be directly accessible via a web browser. This exposure could lead to the disclosure of sensitive information, including database credentials, API keys, and other critical system configurations. Sensitive Information Disclosure via .env File Exposure: The .env file, which typically contains environment variables and sensitive application configurations, is directly accessible via a web browser due to missing web server configurations that restrict access to such files. This allows an unauthenticated attacker to view the contents of this file by simply navigating to its URL. MitigationUpdate Mautic to the latest Mautic version. By default, Mautic does not use .env files for production data. For Apache users: Ensure your web server is configured to respect .htaccess files. For Nginx users: As Nginx does not inherently support .htaccess files, you must manually add a configuration block to your Nginx server configuration to deny access to .env files. Add the following to your Nginx configuration for the Mautic site: location ~ /\.env { deny all; } After modifying your Nginx configuration, remember to reload or restart your Nginx service for the changes to take effect.
This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 5.1, requiring local system access to exploit with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts limited data confidentiality, and limited availability for affected systems.
Reported in 2025, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.
2025-05-28T17:15:23.547
2026-04-15T00:35:42.020
Deferred
CVSSv3.1: 5.1 (MEDIUM)
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SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For affected software, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.