{"cve":"CVE-2026-55068","nvd":{"published":"2026-08-28T20:18:24.183","modified":"2026-09-08T21:11:31.703","status":"Deferred","description":"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_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","score":9.3},"cvss_v3":null,"cwes":["CWE-20"],"references":["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"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:50:50.842544443+00:00"},"epss":{"cve":"CVE-2026-55068","score":0.0059,"percentile":0.4821,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-x8mj-6p3q-g5pp","url":"https://osv.dev/vulnerability/GHSA-x8mj-6p3q-g5pp","summary":"free5GC NRF nnrf-nfm lacks NF Profile input validation — enables NF Registration Poisoning with arbitrary service endpoints","modified":"2026-09-02T19:55:41.093956843Z","packages":[{"ecosystem":"Go","name":"github.com/free5gc/free5gc","purl":"pkg:golang/github.com/free5gc/free5gc","ranges":["<4.2.2"],"fixed":["4.2.2"]}]},{"id":"GO-2026-6316","url":"https://osv.dev/vulnerability/GO-2026-6316","summary":"free5GC NRF nnrf-nfm lacks NF Profile input validation — enables NF Registration Poisoning with arbitrary service endpoints in github.com/free5gc/free5gc","modified":"2026-09-02T19:45:12.643603183Z","packages":[{"ecosystem":"Go","name":"github.com/free5gc/free5gc","purl":"pkg:golang/github.com/free5gc/free5gc","ranges":["<4.2.2+incompatible"],"fixed":["4.2.2+incompatible"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}