Authentication Bypass in Novel-plus by xxyopen

CVE-2025-6533

What is CVE-2025-6533?

A significant vulnerability has been identified in the Novel-plus product by xxyopen, specifically in the ajaxLogin function of the CATCHA Handler. This flaw allows for an unauthorized authentication bypass through a capture-replay attack method, enabling potential remote access to sensitive areas of the application. Attackers may find it challenging to exploit this vulnerability, but the risk is compounded as public disclosure of the exploit has taken place. Despite early notifications to the vendor about this vulnerability, no response has been received.

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