{"id":"EUVD-2026-32571","revision":"a8229e4f5f954211a92be637412e8d06","records":[{"revision":"a8229e4f5f954211a92be637412e8d06","observedAt":"2026-11-03T09:00:03.74+00:00","statement":{"source":"euvd","id":"EUVD-2026-32571","aliases":["CVE-2026-44327","GHSA-cmpj-2x3g-m7g3"],"title":"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 OA…","description":"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 handler returns 200 OK. The current OAM handler is a stub that returns null, but the structural defect is route-group-scoped: the entire OAM route group has no inbound auth middleware, so every future OAM operation added to this group inherits the missing auth boundary by default. This vulnerability is fixed in 4.2.2.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:H","score":10,"severity":null}],"references":["https://github.com/free5gc/free5gc/security/advisories/GHSA-cmpj-2x3g-m7g3","https://github.com/free5gc/free5gc/issues/861","https://github.com/free5gc/nef/pull/23"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-32571","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"May 27, 2026, 3:40:41 PM","dateUpdated":"May 28, 2026, 2:40:53 PM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-32571","identifiers":["EUVD-2026-32571","CVE-2026-44327","GHSA-cmpj-2x3g-m7g3"]},"retained":false,"historicalAffected":[]}],"coverage":[]}