Description
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().
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| craftcms | cms | 5.0.0-RC1 – < 5.10.7, 4.0.0-RC1 – < 4.18.3 | 5.10.7 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
GitHub 1 repository
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TRX-0/CVE-2026-72781-craftcms-sandbox-rce ★ 0 · Sep 21, 2026
Craft CMS CVE-2026-72781 Twig sandbox escape RCE PoC
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Packagist | craftcms/cms | >= 5.0.0-RC1, < 5.10.7 | 5.10.7 | GHSA-f5wm-88jv-g5hx |
| Packagist | craftcms/cms | >= 4.0.0-RC1, < 4.18.3 | 4.18.3 | GHSA-f5wm-88jv-g5hx |
References
- GitHub Security Advisory (GHSA-f5wm-88jv-g5hx) vendor-advisory
- VulnCheck Advisory: Craft CMS 5.0.0-RC1 before 5.10.7 Remote Code Execution via Twig Sandbox Escape third-party-advisory