CVE-2026-30057

An issue in the CreateUEContext handler component of free5gc v4.1.0 allows attackers to cause a Denial of Service DoS via supplying a crafted request...

CVE-2026-30062

An issue in the NGAP handler of free5gc v4.0.1 allows attackers to cause a Denial of Service DoS via a crafted NAS PDU...

EUVD-2026-67114

Improper input validation in the buildFilter function processor/processor.go of free5gc v4.0.1 allows attackers to cause a Denial of Service DoS via a crafted input...

CVE-2026-30073

An issue in the NssaiAvailabilitySubscriptionCreate component of free5gc v4.0.1 allows attackers to cause a Denial of Service DoS via a crafted POST request...

EUVD-2026-67121

An issue in the NssaiAvailabilitySubscriptionCreate component of free5gc v4.0.1 allows attackers to cause a Denial of Service DoS via a crafted POST request...

CVE-2026-30051

CVE-2026-30051 affects the free5gc v4.1.0 open-source 5G core network implementation. The vulnerability resides in the CreateUEContextProcedure function, reachable at the API endpoint /v1/ue-contexts/{supi} . An unauthenticated remote attacker can cause a Denial of Service by sending a crafted PU...

Improper Input Validation

free5GC is vulnerable to Improper Input Validation. The vulnerability is due to the AUSF failing to validate the supiOrSuci field in UE authentication requests before forwarding it in an unescaped URL path, which allows an unauthenticated attacker to send crafted input containing null bytes or...

CVE-2026-53551 free5GC AUSF: null byte injection in supiOrSuci causes HTTP 500 internal service failure

free5GC is an open-source implementation of the 5G core network. Prior to 1.4.5, the free5GC AUSF Authentication Server Function does not validate the supiOrSuci field in UE authentication requests. Null bytes \x00 and other control characters pass through JSON parsing unchanged and are forwarded...

CVE-2026-53551

The vulnerability CVE-2026-53551 affects free5GC AUSF prior to version 1.4.5, where the supiOrSuci field in UE authentication requests is not validated. Null bytes (\x00) and other control characters pass through JSON parsing and are forwarded to the UDM in an unescaped URL path, causing Go’s net...

CVE-2026-53551 free5GC AUSF: null byte injection in supiOrSuci causes HTTP 500 internal service failure

free5GC is an open-source implementation of the 5G core network. Prior to 1.4.5, the free5GC AUSF Authentication Server Function does not validate the supiOrSuci field in UE authentication requests. Null bytes \x00 and other control characters pass through JSON parsing unchanged and are forwarded...

SUSE CVE-2026-44319

free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's NEF terminates the entire process when a stored PFD-subscription notifyUri cannot be reached. In PfdChangeNotifier.FlushNotifications, the notifier calls NnefPFDmanagementNotify... and on any delivery error...

SUSE CVE-2026-44327

free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's NEF mounts the nnef-oam route group without inbound OAuth2/bearer-token authorization. A network attacker who can reach NEF on the SBI can hit the OAM route with no Authorization header at all and the handl...

GO-2026-5570 Free5gc NRF is vulnerable to scope validation bypass via maliciously crafted targetNF value in github.com/free5gc/nrf

Free5gc NRF is vulnerable to scope validation bypass via maliciously crafted targetNF value in github.com/free5gc/nrf...

GO-2026-5767 Free5GC AMF is vulnerable to DoS through its HandleRegistrationComplete function in github.com/free5gc/amf

Free5GC AMF is vulnerable to DoS through its HandleRegistrationComplete function in github.com/free5gc/amf...

GO-2026-5717 free5GC's NEF nnef-callback route group is unauthenticated; forged callback requests are accepted into the processing path in github.com/free5gc/nef

free5GC's NEF nnef-callback route group is unauthenticated; forged callback requests are accepted into the processing path in github.com/free5gc/nef...

GO-2026-5720 free5GC's PCF npcf-smpolicycontrol POST /sm-policies panics on downstream UDR/OpenAPI 404 via nil pointer dereference in github.com/free5gc/pcf

free5GC's PCF npcf-smpolicycontrol POST /sm-policies panics on downstream UDR/OpenAPI 404 via nil pointer dereference in github.com/free5gc/pcf...

GO-2026-5731 free5GC's PCF npcf-policyauthorization POST /app-sessions panics on suppFeat=1 with missing AfRoutReq via nil pointer dereference in github.com/free5gc/pcf

free5GC's PCF npcf-policyauthorization POST /app-sessions panics on suppFeat=1 with missing AfRoutReq via nil pointer dereference in github.com/free5gc/pcf...

GO-2026-5673 Free5GC AMF has Missing Concurrent NAS SMC Validation During NGAP Handover in github.com/free5gc/amf

Free5GC AMF has Missing Concurrent NAS SMC Validation During NGAP Handover in github.com/free5gc/amf...

GO-2026-5647 free5GC's NEF crashes via logger.Fatal on PFD notification delivery failure (attacker-controlled notifyUri) in github.com/free5gc/nef

free5GC's NEF crashes via logger.Fatal on PFD notification delivery failure attacker-controlled notifyUri in github.com/free5gc/nef...

GO-2026-5537 free5GC's SMF UPI DELETE /upi/v1/upNodesLinks/{ref} panics on AN-node deletion via nil UPF dereference; unauthenticated, state-mutating in github.com/free5gc/smf

free5GC's SMF UPI DELETE /upi/v1/upNodesLinks/ref panics on AN-node deletion via nil UPF dereference; unauthenticated, state-mutating in github.com/free5gc/smf...