A vulnerability, which was classified as problematic, was found in Dreamer CMS up to 3.5.0. Affected is an unknown function of the component File Upload Handler. The manipulation leads to cross site scripting. Using CWE to declare the problem leads to CWE-79. The weakness was shared 03/30/2023 as 11. The advisory is available at github.com. This vulnerability is traded as CVE-2023-1746. It is possible to launch the attack remotely. There are no technical details available. There is no exploit available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment. This vulnerability is assigned to T1059.007 by the MITRE ATT&CK project. It is declared as not defined. As 0-day the estimated underground price was around $0-$5k. A possible mitigation has been published before and not just after the disclosure of the vulnerability.