{"id":"EUVD-2026-32577","revision":"6bf15dad3c6f473bb41d48c22573cb3f","records":[{"revision":"6bf15dad3c6f473bb41d48c22573cb3f","observedAt":"2026-11-05T09:55:19.215+00:00","statement":{"source":"euvd","id":"EUVD-2026-32577","aliases":["CVE-2026-44321","GHSA-44qj-cghf-9p97"],"title":"free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's SMF mounts the UPI management route group without inbound OAuth2 middleware. The POST /upi/v1/upNodesLinks create-or-update handler accepts attacker-…","description":"free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's SMF mounts the UPI management route group without inbound OAuth2 middleware. The POST /upi/v1/upNodesLinks create-or-update handler accepts attacker-controlled JSON and passes it directly into UpNodesFromConfiguration(), which calls logger.InitLog.Fatalf(...) on several validation failures. One confirmed path is the UE-IP-pool overlap check: a single unauthenticated POST that adds a new UPF whose pool overlaps an existing UPF terminates the entire SMF process (docker ps shows Exited (1)), not just the goroutine. 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:U/C:N/I:N/A:H","score":7.5,"severity":null}],"references":["https://github.com/free5gc/free5gc/security/advisories/GHSA-44qj-cghf-9p97","https://github.com/free5gc/free5gc/issues/906","https://github.com/free5gc/smf/pull/203","https://github.com/free5gc/smf/commit/e0974e07ddab44a67d36a563cca383b2449e33e5"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-32577","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"May 27, 2026, 3:47:33 PM","dateUpdated":"May 27, 2026, 5:53:42 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-2026-32577","identifiers":["EUVD-2026-32577","CVE-2026-44321","GHSA-44qj-cghf-9p97"]},"retained":false,"historicalAffected":[]}],"coverage":[]}