Unknown · Siteserver Cms · CVE-2021-42654
**Name of the Vulnerable Software and Affected Versions**
SiteServer CMS versions prior to 5.1
**Description**
The issue is related to an unrestricted upload of a file with a dangerous type, which could be used to execute arbitrary code. This could potentially lead to significant security breaches.
**Recommendations**
For versions prior to 5.1, update to version 5.1 or later to resolve the issue.
As a temporary workaround, consider restricting file uploads to only allow safe file types until a patch is available.