applications/luci-app-ddns/luasrc/model/cbi/ddns/detail.lua in the DDNS package for OpenWrt 19.07 allows remote authenticated users to inject arbitrary commands via POST requests.Referenceshttps://github.com/openwrt/luci/commit/9df7ea4d66644df69fcea18b36bc465912ffchttps://openwrt.org/advisory/2021-08-01-3
