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Medium

Mautic does not shield .env files from web traffic

  • Disclosed: 28.05.2025
  • Updated: 11.10.2026 10:22

Summary

This 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.

Mitigation

Update 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:

nginx
location ~ /\.env {
    deny all;
}

After modifying your Nginx configuration, remember to reload or restart your Nginx service for the changes to take effect.

Affected software

Click a technology to see all vulnerabilities affecting it.

PlatformPackageVulnerable versionsFixed in
Composer package mautic/core >= 4.4.0, < 4.4.16, >= 5.0.0-alpha, < 5.2.6, >= 6.0.0-alpha, < 6.0.2 4.4.16, 5.2.6, 6.0.2

References

CVSS score 5.1/10
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
Weakness (CWE)
CWE-312, CWE-526
Platform
Composer
Package
mautic/core
Disclosed
28.05.2025
Updated
11.10.2026 10:22

Sources and licenses

OSV / GitHub Advisory Database - GHSA-h2wg-v8wg-jhxh - CC BY 4.0

Vulnerability history: mautic/core

All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (57) in the archive
Total entries
57
First → latest
01.2021 07.2026
Without a fix
1
Exploited in attacks
0

Severity breakdown

  • Critical 9
  • High 17
  • Medium 29
  • Low 2

Disclosures per year

Severity:
  1. Mautic has Stored Cross-Site Scripting (XSS) in Projects Component
    High · 7.6 CVE-2026-9809 >= 7.0.0, < 7.1.2 7.1.2
  2. Mautic has an Authorization Bypass in API v2 Endpoints
    High · 7.1 CVE-2026-9808 >= 7.0.0, < 7.1.2 7.1.2
  3. Mautic vulnerable to Path Traversal via Campaign Import
    Critical · 9.9 CVE-2026-9559 >= 7.0.0, < 7.1.2 7.1.2
  4. Mautic has Server-Side Template Injection (SSTI) in Theme Templates
    Critical · 9.9 CVE-2026-9558 >= 1.3.0, >= 5.0.0, < 5.2.11, >= 6.0.0, < 6.0.9, >= 7.0.0, < 7.1.2 5.2.11, 6.0.9, 7.1.2
  5. Mautic has SQL Injection in API Contact Filtering
    High · 7.1 CVE-2026-4776 >= 2.6.0, <= 4.4.13, >= 5.0.0, < 5.2.11, >= 6.0.0, < 6.0.9, >= 7.0.0, < 7.1.2 5.2.11, 6.0.9, 7.1.2
  6. Mautic is Vulnerable to SQL Injection through Contact Activity API Sorting
    High · 7.6 CVE-2026-3105 >= 2.10.0, < 5.2.10, >= 6.0.0-alpha, < 6.0.8, >= 7.0.0-alpha, < 7.0.1 5.2.10, 6.0.8, 7.0.1
  7. Mautic user without privileged access to the Marketplace can install and uninstall composer packages
    Critical CVE-2025-13828 >= 4.0.0, < 4.4.18, >= 5.0.0, < 5.2.9, >= 6.0.0, < 6.0.7 4.4.18, 5.2.9, 6.0.7
  8. Mautic does not shield .env files from web traffic this entry
    Medium · 5.1 CVE-2024-47056 >= 4.4.0, < 4.4.16, >= 5.0.0-alpha, < 5.2.6, >= 6.0.0-alpha, < 6.0.2 4.4.16, 5.2.6, 6.0.2
  9. Mautic allows Improper Authorization in Reporting API
    High · 7.7 CVE-2024-47053 >= 1.0.1, < 5.2.3 5.2.3
  10. Mautic allows Remote Code Execution and File Deletion in Asset Uploads
    Critical · 9.1 CVE-2024-47051 < 5.2.3 5.2.3
  11. Mautic vulnerable to Improper Access Control in UI upgrade process
    High · 7.0 CVE-2022-25768 >= 1.1.3, < 4.4.13, >= 5.0.0-alpha, < 5.1.1 4.4.13, 5.1.1
  12. Mautic is vulnerable to XSS vulnerability
    Critical · 9.6 CVE-2020-35125 < 2.16.5, >= 3.0.0, < 3.2.4 2.16.5, 3.2.4
  13. Mautic Sensitive Data Exposure due to inadequate user permission settings
    High · 8.3 CVE-2022-25776 >= 1.0.2, < 4.4.12, >= 5.0.0-alpha, < 5.0.4 4.4.12, 5.0.4
  14. Mautic vulnerable to Relative Path Traversal / Arbitrary File Deletion due to GrapesJS builder
    High · 8.1 CVE-2021-27916 >= 3.3.0, < 4.4.12, >= 5.0.0-alpha, < 5.0.4 4.4.12, 5.0.4
  15. Mautic vulnerable to stored cross-site scripting in description field
    High · 7.6 CVE-2021-27915 >= 1.0.0-beta2, < 4.4.12 4.4.12
  16. Cross-site Scripting vulnerability in Mautic's tracking pixel functionality
    Critical · 9.6 CVE-2022-25772 < 4.3.0 4.3.0
  17. Mautic stored Cross-site Scripting (XSS)
    Critical · 9.0 CVE-2020-35129 < 3.2.4 3.2.4
  18. Mautic stored Cross-site Scripting (XSS)
    Critical · 9.0 CVE-2020-35128 >= 3.2.0, < 3.2.4, >= 2.0.0, < 2.16.5 3.2.4, 2.16.5
  19. Sensitive Cookie Without HttpOnly and Secure Flag
    High · 7.5 CVE-2017-1000046 < 2.1.1 2.1.1
  20. Mautic Cross-Site Request Forgery (CSRF)
    High · 8.8 CVE-2017-8874 = 1.4.1 no fix
  21. Stored XSS vulnerability on Bounce Management Callback
    High · 8.2 CVE-2021-27910 < 3.3.4, >= 4.0.0-alpha1, < 4.0.0 3.3.4, 4.0.0
  22. XSS vulnerability on contacts view
    High · 8.3 CVE-2021-27911 < 3.3.4, >= 4.0.0-alpha1, < 4.0.0 3.3.4, 4.0.0
  23. XSS vulnerability on asset view
    High · 7.1 CVE-2021-27912 < 3.3.4, >= 4.0.0-alpha1, < 4.0.0 3.3.4, 4.0.0
  24. XSS in Mautic
    High CVE-2021-3142 >= 3.0.0, < 3.2.4, >= 2.0.0, < 2.16.5 3.2.4, 2.16.5
  25. Mautic Sessions could be hijacked due to tracking contacts by an auto-incremented ID
    High · 7.5 CVE-2018-10189 < 2.13.0 2.13.0
  26. Disabled users able to log in with third party SSO plugin
    High · 8.1 CVE-2017-1000489 >= 2.0.0, < 2.12.0 2.12.0
  27. XSS vulnerability leveraged through referrers could allow un-authorized admin access in Mautic
    Critical CVE-2020-35124 >= 3.0.0, < 3.2.4, >= 2.0.0, < 2.16.5 3.2.4, 2.16.5

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