CVE-2026-90710A vulnerability was determined in taisan tarzan-cms 1.0.0. This issue affects the function openConnection of the file com/tarzan/cms/modules/admin/service/biz/ThemeService.java of the component Theme Download Function. Executing a manipulation of the argument httpUrl can lead to server-side request forgery. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized. The project was informed of the problem early through an issue report but has not responded yet.