CVE-2026-9558
Published: May 29, 2026
Modified: May 29, 2026
CVSS v3.1
9.9
Description
A Server-Side Template Injection (SSTI) vulnerability exists in Mautic's theme engine. The platform renders uploaded Twig templates without a sandbox or strict function restrictions. Authenticated users with permissions to create or upload themes can abuse this to execute arbitrary code on the hosting server (Remote Code Execution) or access restricted system files and configuration settings.
| Vendor | Product | Versions |
|---|---|---|
Unknown | mautic/core | affected 1.3.0 - < 4.4.20affected 5.0.0 - < 5.2.11affected 6.0.0 - < 6.0.9affected 7.0.0 - < 7.1.2 |
Weaknesses (CWE)
CVSS v3.1 Details
CVSS v3.1 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
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