CVE-2026-112772

Craft CMS 5.0.0 before 5.11.0 RCE via Asset::getMimeType Transform Injection

State: Published
Severity: 8.7 High
Published: Oct 19, 2026
Updated: Oct 20, 2026
Reserved: Oct 19, 2026

Description

Craft CMS from 5.0.0 before 5.11.0 contains a remote code execution vulnerability that allows authenticated Control Panel users to escape the Twig sandbox via Asset::getMimeType transforms. Attackers can supply 'as' or 'on' keys passed unfiltered to Craft::createObject, attaching malicious behaviors or event handlers that execute code as the web user.

Scores

CVSS	Score	Vector	Source
4.0	8.7 High	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N	VulnCheck
3.1	8.8 High	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	VulnCheck

Weaknesses

CWE-94 Improper Control of Generation of Code ('Code Injection')

Affected Products

Product	Versions
cmscraftcms	5.0.0 to before 5.11.0Affected 5.11.0Not affected

References

GitHub Security Advisory (GHSA-qm9x-rmcj-h2rc)vendor-advisory
VulnCheck Advisory: Craft CMS 5.0.0 before 5.11.0 RCE via Asset::getMimeType Transform Injectionthird-party-advisory

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