Kurz gesagt
- CVE-2026-55794 ist eine Schwachstelle (HOCH (CVSS 8.7)) in craftcms/cms.
- Wahrscheinlichkeit einer Ausnutzung in den nächsten 30 Tagen (EPSS): 0.41%, höher als bei 35.4% aller Schwachstellen.
- Abhilfe: auf 5.10.0 oder neuer aktualisieren.
| Package | Affected versions | Patched versions |
|---|
| craftcms/cms Packagist | ≥ 5.9.0, < 5.10.0
| 5.10.0
|
Description
Requirements:
- Control panel access
- Permissions to edit an entry
Details
Control panel users with the ability to edit entries can execute unsandboxed Twig code via the HTTP Referrer header.
The issue happens when a user is saving entries. Strings for a signed redirect URL are being compiled as a Twig template via renderObjectTemplate(), and while a sandboxed alternative already exists (renderSandboxedObjectTemplate()), it is not used in this case. This signed URL can be specified by users, as it is reflected in the “Referer” HTTP request header, which is under attacker control.
This has been fixed in Craft 5.10.0. Affected users should update to that version or higher to get the fix.
Resources
https://github.com/craftcms/cms/pull/18680
NVD description
Craft CMS is a content management system (CMS). In versions 5.9.0 and above prior to 5.10.0, control panel users with the ability to edit entries can execute unsandboxed Twig code via the HTTP Referrer header, potentially leading to authenticated RCE. The issue happens when a user is saving entries. Strings for a signed redirect URL are being compiled as a Twig template via renderObjectTemplate(), and while a sandboxed alternative already exists (renderSandboxedObjectTemplate()), it is not used in this case. This signed URL can be specified by users, as it is reflected in the “Referer” HTTP request header, which is under attacker control. This issue has been fixed in version 5.10.0.
Running one of these products? Scan your site to see whether it exposes a vulnerable version.
Scan my site free