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...

CVE-2026-26024 free5GC SMF crash (nil pointer dereference) on PFCP SessionReportRequest when ReportType.USAR=1 and UsageReport omits mandatory URRID sub-IE 

free5GC SMF provides Session Management Function for free5GC, an open-source project for 5th generation 5G mobile core networks. In versions up to and including 1.4.1, SMF panics and terminates when processing a malformed PFCP SessionReportRequest on the PFCP UDP/8805 interface. No known upstrea...

NULL Pointer Dereference

Overview Affected versions of this package are vulnerable to NULL Pointer Dereference via the identityTriggerType function in the pfcpreports.go file. An attacker can cause a denial of service by sending specially crafted requests that trigger a null pointer dereference. Remediation Upgrade...

PT-2026-6666

Name of the Vulnerable Software and Affected Versions Free5GC versions prior to 4.1.1 Description A flaw exists in Free5GC’s SMF component, specifically within the ResolveNodeIdToIp function located in the internal/sbi/processor/datapath.go file. This issue can lead to a denial of service. Remote...

CVE-2026-1684

A vulnerability was found in Free5GC SMF up to 4.1.0. Affected by this issue is the function HandleReports of the file /internal/context/pfcpreports.go of the component PFCP UDP Endpoint. The manipulation results in denial of service. The attack can be executed remotely. It is advisable to...

CVE-2026-1684 Free5GC SMF PFCP UDP Endpoint pfcp_reports.go HandleReports denial of service

A vulnerability was found in Free5GC SMF up to 4.1.0. Affected by this issue is the function HandleReports of the file /internal/context/pfcpreports.go of the component PFCP UDP Endpoint. The manipulation results in denial of service. The attack can be executed remotely. It is advisable to...

CVE-2026-1684

CVE-2026-1684 affects Free5GC SMF up to version 4.1.0. The vulnerability resides in the PFCP UDP Endpoint’s pfcp_reports.go, specifically the HandleReports function, where input manipulation can cause a denial of service. The issue can be exploited remotely. Available descriptions consistently in...

EUVD-2026-5028

A vulnerability was found in Free5GC SMF up to 4.1.0. Affected by this issue is the function HandleReports of the file /internal/context/pfcpreports.go of the component PFCP UDP Endpoint. The manipulation results in denial of service. The attack can be executed remotely. It is advisable to...

CVE-2026-1682

A flaw has been found in Free5GC SMF up to 4.1.0. Affected is the function HandlePfcpAssociationReleaseRequest of the file internal/pfcp/handler/handler.go of the component PFCP UDP Endpoint. Executing a manipulation can lead to null pointer dereference. The attack may be launched remotely. The...

CVE-2026-1683

A vulnerability has been found in Free5GC SMF up to 4.1.0. Affected by this vulnerability is the function HandlePfcpSessionReportRequest of the file internal/pfcp/handler/handler.go of the component PFCP. The manipulation leads to denial of service. Remote exploitation of the attack is possible...

CVE-2026-1683 Free5GC SMF PFCP handler.go HandlePfcpSessionReportRequest denial of service

A vulnerability has been found in Free5GC SMF up to 4.1.0. Affected by this vulnerability is the function HandlePfcpSessionReportRequest of the file internal/pfcp/handler/handler.go of the component PFCP. The manipulation leads to denial of service. Remote exploitation of the attack is possible...

CVE-2026-1683

Free5GC SMF up to 4.1.0 is affected by a vulnerability in HandlePfcpSessionReportRequest (internal/pfcp/handler/handler.go) of the PFCP component, enabling remote denial of service. Exploitation has been publicly disclosed. Remediation is to deploy an official patch; multiple sources (NVD/Red Hat...

CVE-2026-1682 Free5GC SMF PFCP UDP Endpoint handler.go HandlePfcpAssociationReleaseRequest null pointer dereference

A flaw has been found in Free5GC SMF up to 4.1.0. Affected is the function HandlePfcpAssociationReleaseRequest of the file internal/pfcp/handler/handler.go of the component PFCP UDP Endpoint. Executing a manipulation can lead to null pointer dereference. The attack may be launched remotely. The...

CVE-2026-1682

A flaw has been found in Free5GC SMF up to 4.1.0. Affected is the function HandlePfcpAssociationReleaseRequest of the file internal/pfcp/handler/handler.go of the component PFCP UDP Endpoint. Executing a manipulation can lead to null pointer dereference. The attack may be launched remotely. The...

PT-2026-5400

Name of the Vulnerable Software and Affected Versions Free5GC SMF versions through 4.1.0 Description A flaw exists in Free5GC SMF that can lead to a denial of service. The issue is related to the HandlePfcpSessionReportRequest function within the PFCP component, specifically in the file...