A vulnerability was found in CXBSoft Post-Office up to 1.0 and classified as critical. Affected by this issue is some unknown functionality of the file /apps/reg_go.php of the component HTTP POST Request Handler. The manipulation of the argument username_reg leads to sql injection. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-250700. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.