CVE-2026-41135

free5GC UDR is the Policy Control Function PCF for free5GC, an an open-source project for 5th generation 5G mobile core networks. A memory leak vulnerability in versions prior to 1.4.3 allows any unauthenticated attacker with network access to the PCF SBI interface to cause uncontrolled memory...

CVE-2026-41135 free5GC PCF: Memory Leak via CORS Middleware Registration in HTTP Handler Leads to Denial of Service

free5GC UDR is the Policy Control Function PCF for free5GC, an an open-source project for 5th generation 5G mobile core networks. A memory leak vulnerability in versions prior to 1.4.3 allows any unauthenticated attacker with network access to the PCF SBI interface to cause uncontrolled memory...

CVE-2026-41135

CVE-2026-41135 affects free5GC UDR (PCF) prior to version 1.4.3. The root cause is a faulty router.Use() call inside an HTTP handler that registers a new CORS middleware on every incoming request, causing the Gin router to permanently grow its handler chain. This leads to progressive memory exhau...