CVE-2026-55068

free5GC is an open-source implementation of the 5G core network. In 4.2.2 and earlier, the NRF RegisterNFInstance handler at PUT /nnrf-nfm/v1/nf-instances/{nfInstanceID} accepts NF Profiles without enforcing UUID format, nfStatus enum values, heartBeatTimer ranges, mandatory profile fields, or nfServices.ipEndPoints address constraints. The invalid profiles are persisted in the MongoDB NfProfile collection and returned by NFDiscover, allowing an attacker with SBI access to advertise attacker-controlled network-function endpoints and redirect control-plane signaling. This can expose credentials and signaling, alter service discovery integrity, and deny service across network functions that trust the NRF. This issue is fixed in version 4.2.3.

CVSS

No CVSS.

References

Link	Resource
https://github.com/free5gc/free5gc/issues/1056
https://github.com/free5gc/free5gc/releases/tag/v4.2.3
https://github.com/free5gc/free5gc/security/advisories/GHSA-x8mj-6p3q-g5pp
https://github.com/free5gc/nrf/commit/bda0cf75be5556bb4c758c8b34710f3fe6bbe3ea
https://github.com/free5gc/nrf/commit/fcd3cfaa27cc4dc17172ee0c4c3e0a3a696297c6
https://github.com/free5gc/nrf/pull/90
https://github.com/free5gc/nrf/releases/tag/v1.4.5
https://github.com/free5gc/free5gc/security/advisories/GHSA-x8mj-6p3q-g5pp

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-28 20:18

Updated : 2026-09-08 21:11

NVD link : CVE-2026-55068

Mitre link : CVE-2026-55068

CVE.ORG link : CVE-2026-55068

JSON object : View

Products Affected

No product.

CWE

CWE-20

Improper Input Validation

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