CVE-2026-44328

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. On top of that, the DELETE /upi/v1/upNodesLinks/upNodeRef handler unconditionally dereferences upNode.UPF after the type-guarded...

EUVD-2026-32570

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. On top of that, the DELETE /upi/v1/upNodesLinks/upNodeRef handler unconditionally dereferences upNode.UPF after the type-guarded...

CVE-2026-44328 free5GC: SMF UPI DELETE /upi/v1/upNodesLinks/{ref} panics on AN-node deletion via nil UPF dereference; unauthenticated, state-mutating

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. On top of that, the DELETE /upi/v1/upNodesLinks/upNodeRef handler unconditionally dereferences upNode.UPF after the type-guarded...

free5GC's SMF UPI DELETE /upi/v1/upNodesLinks/{ref} panics on AN-node deletion via nil UPF dereference; unauthenticated, state-mutating

Summary free5GC's SMF mounts the UPI management route group without inbound OAuth2 middleware same root cause as the broader UPI auth gap reported in free5gc/free5gc887. On top of that, the DELETE /upi/v1/upNodesLinks/upNodeRef handler unconditionally dereferences upNode.UPF after the type-guarde...

Missing Authorization

Overview Affected versions of this package are vulnerable to Missing Authorization through the POST /upi/v1/upNodesLinks handler, which processes attacker-controlled JSON input without authentication or authorization checks. An attacker can terminate the entire process by submitting a crafted...

GHSA-44QJ-CGHF-9P97 free5GC's SMF UPI POST /upi/v1/upNodesLinks exits the SMF process on overlapping UE pools (unauthenticated, reachable Fatalf)

Summary free5GC's SMF mounts the UPI management route group without inbound OAuth2 middleware same root cause as free5gc/free5gc887. The POST /upi/v1/upNodesLinks create-or-update handler accepts attacker-controlled JSON and passes it directly into UpNodesFromConfiguration, which calls...

Missing Authorization

Overview Affected versions of this package are vulnerable to Missing Authorization through the POST /upi/v1/upNodesLinks handler, which processes attacker-controlled JSON input without authentication or authorization checks. An attacker can terminate the entire process by submitting a crafted...

free5GC's SMF UPI POST /upi/v1/upNodesLinks exits the SMF process on overlapping UE pools (unauthenticated, reachable Fatalf)

Summary free5GC's SMF mounts the UPI management route group without inbound OAuth2 middleware same root cause as free5gc/free5gc887. The POST /upi/v1/upNodesLinks create-or-update handler accepts attacker-controlled JSON and passes it directly into UpNodesFromConfiguration, which calls...

PT-2026-39259

Name of the Vulnerable Software and Affected Versions free5GC version 4.2.1 Description The Session Management Function SMF mounts the UPI management route group without OAuth2 or bearer-token authorization middleware. This allows a network attacker with access to the Service Based Interface SBI ...