wangsongyan wblog backup.go RestorePost server-side request forgery

A vulnerability was identified in wangsongyan wblog 0.0.1. This affects the function RestorePost of the file backup.go. Such manipulation of the argument fileName leads to server-side request forgery. It is possible to launch the attack remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.