Appmax
Monthly
The Appmax WordPress plugin versions up to 1.0.3 contain an improper input validation vulnerability in its public REST API webhook endpoint at /webhook-system that fails to authenticate, verify signatures, or validate the authenticity of incoming webhook requests. Unauthenticated attackers can exploit this by crafting malicious webhook payloads to modify existing WooCommerce order statuses, create arbitrary new orders and products with attacker-controlled data, and inject arbitrary metadata into orders. With a CVSS score of 5.3 (medium severity), an CVSS vector indicating network accessibility with low attack complexity and no authentication required, and confirmed vulnerability references in the official WordPress plugin repository, this vulnerability poses a significant integrity risk to e-commerce sites using the affected plugin.
The Appmax WordPress plugin versions up to 1.0.3 contain an improper input validation vulnerability in its public REST API webhook endpoint at /webhook-system that fails to authenticate, verify signatures, or validate the authenticity of incoming webhook requests. Unauthenticated attackers can exploit this by crafting malicious webhook payloads to modify existing WooCommerce order statuses, create arbitrary new orders and products with attacker-controlled data, and inject arbitrary metadata into orders. With a CVSS score of 5.3 (medium severity), an CVSS vector indicating network accessibility with low attack complexity and no authentication required, and confirmed vulnerability references in the official WordPress plugin repository, this vulnerability poses a significant integrity risk to e-commerce sites using the affected plugin.