A vulnerability has been found in django-haystack up to 3.3.0. Affected is the function topython of the file haystack/backends/elasticsearchbackend.py of the component morelikethis Template Tag Handler. Such manipulation of the argument resultclass leads to improper neutralization of directives in dynamically evaluated code. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 3.4.0 is able to address this issue. The name of the patch is eb05f193c9771a68dcc8cfac6674a0d48a52ee9d. It is suggested to upgrade the affected component.