HCL Technologies HCL Unica Platform is an enterprise automated marketing platform from HCL Technologies India.A security vulnerability exists in versions of HCL Technologies HCL Unica Platform prior to 12.1.1, which stems from an improperly configured XML parser that processing user-supplied input without sufficient validation, leading to an XML External Entity (XXE) injection vulnerability that could be exploited by an attacker to manipulate XML content and inject malicious external entity references.