Deserialization Vulnerabilities

Deserialization vulnerabilities occur when a computer system converts data received from an external source back into a specific format or object, potentially allowing malicious code to be embedded. If not properly checked, attackers can send crafted data that, when deserialized, executes harmful commands or manipulates the system’s behavior. Essentially, it's like taking a package from someone you don’t trust and unpacking it without inspecting its contents—this can lead to security breaches, data leaks, or system compromise. Proper validation and security checks during deserialization help prevent these vulnerabilities.