A vulnerability was found in rf Keynote up to 0.x on Rails. It has been rated as problematic. Affected by this issue is some unknown functionality of the file lib/keynote/rumble.rb. The manipulation of the argument value leads to cross site scripting. Using CWE to declare the problem leads to CWE-79. The weakness was disclosed 12/31/2022 as 05be4356b0a6ca7de48da926a9b997beb5ffeb4a. The advisory is available at github.com. This vulnerability is handled as CVE-2017-20159. The attack may be launched remotely. Technical details are 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. Upgrading to version 1.0.0 is able to address this issue. The updated version is ready for download at github.com. The patch is identified as 05be4356b0a6ca7de48da926a9b997beb5ffeb4a. The bugfix is ready for download at github.com. It is recommended to upgrade the affected component. A possible mitigation has been published before and not just after the disclosure of the vulnerability.