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EUVD-2026-291357

fkie_cve-2026-22692

October is a Content Management System (CMS) and web platform. Versions prior to 3.7.13 and versions 4.0.0 through 4.1.4 contain a sandbox bypass vulnerability in the optional Twig safe mode feature (CMS_SAFE_MODE). Certain methods on the collect() helper were not properly restricted, allowing authenticated users with template editing permissions to bypass sandbox protections. Exploitation requires authenticated backend access with CMS template editing permissions and only affects installations with CMS_SAFE_MODE enabled (disabled by default). This issue has been fixed in versions 3.7.13 and 4.1.5. To workaround this issue, users can disable CMS_SAFE_MODE if untrusted template editing is not required, and restrict CMS template editing permissions to fully trusted administrators only.

GHSA-m5qg-jc75-4jp6 — October Rain has a Twig Sandbox Bypass via Collection Methods

Affected: Packagist: october/rain

A sandbox bypass vulnerability was identified in the optional Twig safe mode feature (`CMS_SAFE_MODE`). Certain methods on the `collect()` helper were not properly restricted, allowing authenticated users with template editing permissions to bypass sandbox protections.

### Impact - Bypass of Twig sandbox restrictions - Only affects installations with `CMS_SAFE_MODE` enabled (disabled by default) - Requires authenticated backend access with CMS template editing permissions

### Patches The vulnerability has been patched in v4.1.5 and v3.7.13. All users who have enabled safe mode are encouraged to upgrade to the latest patched version.

### Workarounds If upgrading immediately is not possible: - Disable `CMS_SAFE_MODE` if untrusted template editing is not required - Restrict CMS template editing permissions to fully trusted administrators only

### References - Reported by Łukasz Rybak