CVE-2026-9558
published 2026-05-29CVE-2026-9558: A Server-Side Template Injection (SSTI) vulnerability exists in Mautic's theme engine. The platform renders uploaded Twig templates without a sandbox or strict…
PriorityP270critical9.9CVSS 3.1
AVNACLPRLUINSCCHIHAH
EPSS
0.44%
35.1th percentile
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.
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No advisories linked to this vulnerability.
No detection rules found.
No public exploits indexed.
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2026-05-29
Published