CVE-2026-109305

8.8 HIGHpublic exploit available

Published 2026-10-12 · Updated 2026-10-15

AI risk analysis

Summary: A Twig sandbox bypass in Craft CMS allows non-admin users with System Messages permission to execute arbitrary PHP code by invoking callables like passthru or system through 'has some' and 'has every' operators. This creates a high-severity remote code execution vulnerability.
Exploitability: Exploitation is relatively straightforward for users with System Messages permission, requiring only template rendering with crafted input to trigger PHP function calls.
Blast radius: The vulnerability could affect any Craft CMS installation running versions 5.10.2 through 5.10.13, potentially allowing attackers to execute arbitrary code as the web server user across multiple sites.
Detection: No reliable host or network indicator is derivable from the published description.
Prioritized remediation: Upgrade to Craft CMS 5.10.14 immediately to remediate this vulnerability.

rcetwigcmssandbox-bypass

Analysis generated locally by garnet-coder (no data left the box). AI-assisted — verify against primary sources before acting.

NVD 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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CWE-1336

Public exploit & PoC references

https://github.com/craftcms/cms/security/advisories/GHSA-vfcw-xv8p-8rj2

All references

Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.

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