Is CVE-2026-109305 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-109305?

CVE-2026-109305 has a CVSS v3 severity of HIGH (8.8).

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CVE-2026-109305

Description

Craft CMS from 5.10.2 before 5.10.14 contains a Twig sandbox bypass that allows non-admin users to invoke PHP callables through the "has some" and "has every" operators. Users with the System Messages permission can supply two-argument callables such as passthru or system in sandboxed templates to execute code as the web user.