CVE-2026-27690 [CRITICAL] – Due to an HTTP Request Smuggling vulnerability in SAP Approuter, an unauthenticated attack

Due to an HTTP Request Smuggling vulnerability in SAP Approuter, an unauthenticated attacker could send a specially crafted HTTP request that leads to request-response desynchronization. This could result in the exposure of user responses and cause the system to become unavailable. This leads to a high impact on confidentiality and availability.