CVE-2026-28695
Description
Craft is a content management system (CMS). There is an authenticated admin RCE in Craft CMS 5.8.21 via Server-Side Template Injection using the create() Twig function combined with a Symfony Process gadget chain. The create() Twig function exposes Craft::createObject(), which allows instantiation of arbitrary PHP classes with constructor arguments. Combined with the bundled symfony/process dependency, this enables RCE. This bypasses the fix implemented for CVE-2025-57811 (patched in 5.8.7). This vulnerability is fixed in 5.9.0-beta.1 and 4.17.0-beta.1.
How to fix
- craftcms craft_cms4.17.0, 5.9.0 or later
- craftcms/cms5.9.0-beta.1, 4.17.0-beta.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| craftcms craft_cms | 4.0.0 < v < 4.17.0, 5.0.0 < v < 5.9.0, 4.0.0, 5.0.0 | 4.17.0, 5.9.0 |
| craftcms/cmsPackagist | 5.8.7 ≤ v < 5.9.0-beta.1, 4.0.0-RC1 ≤ v < 4.17.0-beta.1 | 5.9.0-beta.1, 4.17.0-beta.1 |
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Attack Surface Management
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