October is a Content Management System (CMS) and web platform to assist with development workflow. An authenticated backend user with the `editor.cms_pages`, `editor.cms_layouts`, or `editor.cms_partials` permissions who would normally not be permitted to provide PHP code to be executed by the CMS due to `cms.safe_mode` being enabled can write specific Twig code to escape the Twig sandbox and execute arbitrary PHP. This issue has been patched in 3.4.15.
| Package (Ecosystem) | Introduced | Fixed | Limit |
|---|---|---|---|
| october/system(Packagist) | 3.0.0 | 3.4.15 | N/A |
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