CVE-2026-65693 – Microweber CMS 2.0.20 Server-Side Template Injection via Mail Templates

CVE ID :CVE-2026-65693

Published : July 24, 2026, 3:33 p.m. | 16 minutes ago

Description :Microweber CMS through 2.0.20 contains a server-side template injection vulnerability that allows authenticated administrators to achieve arbitrary OS command execution by injecting Twig expressions into mail templates. Attackers can exploit the unsandboxed Twig environment in TwigView::render(), which lacks SandboxExtension or a SecurityPolicy, to inject malicious expressions such as filter(‘system’) into mail template bodies stored unsanitized in the database, causing automatic payload execution on each subsequent application event that triggers a mail dispatch.

Severity: 8.6 | HIGH

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