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CVE-2026-9558

Mautic

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.

CVSS 9.9EPSS 0.571%Risk 1.04
View source
Published
2026-05-29 11:16:17
Affected versions
unknown
Type
Installed app
Last modified
2026-07-21 12:10:00
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H