A vulnerability, which was classified as problematic, has been found in wire-webapp up to 2021-06-01. This issue affects some unknown functionality of the component Image Handler. Upgrading to version 2021-06-01-production.0 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published even before and not after the disclosure of the vulnerability.