Description
MelisCms provides a full CMS for Melis Platform, including templating system, drag'n'drop of plugins, SEO and many administration tools. Attackers can deserialize arbitrary data on affected versions of `melisplatform/melis-cms`, and ultimately leads to the execution of arbitrary PHP code on the system. Conducting this attack does not require authentication. Users should immediately upgrade to `melisplatform/melis-cms` >= 5.0.1. This issue was addressed by restricting allowed classes when deserializing user-controlled data.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| melisplatform | melis-cms | <= 5.0.0 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Packagist | melisplatform/melis-cms | < 5.0.1 | 5.0.1 | GHSA-m3m3-6gww-7gj9 |