CVE-2026-28784

Craft is a content management system (CMS). Prior to 5.8.22 and 4.16.18, it is possible to craft a malicious payload using the Twig map filter in text fields that accept Twig input under Settings in the Craft control panel or using the System Messages utility, which could lead to a RCE. For this to work, you must have administrator access to the Craft Control Panel, and allowAdminChanges must be enabled for this to work, which is against our recommendations for any non-dev environment. Alternatively, you can have a non-administrator account with allowAdminChanges disabled, but you have access to the System Messages utility. Users should update to the patched versions (5.8.22 and 4.16.18) to mitigate the issue.

• CWE-1336

• https://craftcms.com/knowledge-base/securing-craft#set-allowAdminChanges-to-false-in-productionTechnical Description
• https://github.com/craftcms/cms/pull/18208Issue Tracking, Patch
• https://github.com/craftcms/cms/security/advisories/GHSA-qc86-q28f-ggwwPatch, Vendor Advisory

Published

Mar 4, 2026

Last Modified

Jun 17, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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