CVE-2026-44321
Gravedad CVSS v3.1:
ALTA
Tipo:
CWE-306
Ausencia de autenticación para una función crítica
Fecha de publicación:
27/05/2026
Última modificación:
27/05/2026
Descripción
*** Pendiente de traducción *** free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's SMF mounts the UPI management route group without inbound OAuth2 middleware. The POST /upi/v1/upNodesLinks create-or-update handler accepts attacker-controlled JSON and passes it directly into UpNodesFromConfiguration(), which calls logger.InitLog.Fatalf(...) on several validation failures. One confirmed path is the UE-IP-pool overlap check: a single unauthenticated POST that adds a new UPF whose pool overlaps an existing UPF terminates the entire SMF process (docker ps shows Exited (1)), not just the goroutine. This vulnerability is fixed in 4.2.2.
Impacto
Puntuación base 3.x
7.50
Gravedad 3.x
ALTA
Referencias a soluciones, herramientas e información
- https://github.com/free5gc/free5gc/issues/906
- https://github.com/free5gc/free5gc/security/advisories/GHSA-44qj-cghf-9p97
- https://github.com/free5gc/smf/commit/e0974e07ddab44a67d36a563cca383b2449e33e5
- https://github.com/free5gc/smf/pull/203
- https://github.com/free5gc/free5gc/security/advisories/GHSA-44qj-cghf-9p97



