CVE-2026-72781
HighCVSS 8.8Summary
Craft CMS versions from 5.0.0-RC1 before 5.10.7 and from 4.0.0-RC1 before 4.18.3 contain a remote code execution vulnerability in the Twig sandbox mechanism, allowing an authenticated attacker with control panel access to execute arbitrary code.
Risk Assessment
An attacker can execute arbitrary code on the server, potentially leading to full system compromise and data confidentiality breach.
Recommendation
Update Craft CMS to version 5.10.7 or 4.18.3 (or later), which include the fix.
Original NVD description (English source)
Craft CMS versions >= 5.0.0-RC1 before 5.10.7 and >= 4.0.0-RC1 before 4.18.3 contain a remote code execution vulnerability in the Twig sandbox mechanism. Because Craft marks the ElementInterface as safe (via the AllowedInSandbox attribute) and the sandbox allowlisting extends to the entire class hierarchy (craft\base\Component up to yii\base\Component), an authenticated attacker with permission to access the control panel can render a malicious Twig template that abuses the yii\base\Component arbitrary function-call gadget to execute arbitrary code, even when the Twig sandbox is enabled via enableTwigSandbox().