The KiotViet Sync plugin for WordPress is vulnerable to authorizarion bypass in all versions up to, and including, 1.8.5. This is due to the plugin using a hardcoded password for authentication in the QueryControllerAdmin::authenticated function. This makes it possible for unauthenticated attackers to create and sync products.
Exploitability
AV:NAC:LPR:NUI:NScope
S:UImpact
C:NI:LA:N5.3/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:NOther