CVE-2025-13828: Mautic

Critical severity, CVSS 9.0. EPSS: 0.2% chance of exploitation in the next 30 days.

SummaryA non privileged user can install and remove arbitrary packages via composer for a composer based installed, even if the flag in update settings for enable composer based update is unticked. ImpactA low-privileged user of the platform can install malicious code to obtain higher privileges.

Affected products

• Mautic Mautic

Published 2025-12-02. Last modified 2026-09-03.