Sparksuite SimpleMDE iFrame cross site scripting

A vulnerability, which was classified as problematic, was found in Sparksuite SimpleMDE up to 1.11.2. This affects an unknown part of the component iFrame Handler. The manipulation leads to cross site scripting. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The identifier VDB-251373 was assigned to this vulnerability.

SimpleMDE 1.11.2 has XSS via an onerror attribute of a crafted IMG element, or via certain input with [ and ( characters, which is mishandled during construction of an A element.