{"id":"GHSA-xq44-64rg-8g3h","summary":"Free5GC AMF is vulnerable to DoS through its HandleRegistrationComplete function","details":"A weakness has been identified in Free5GC 4.1.0. Affected is the function HandleRegistrationComplete of the file internal/gmm/handler.go of the component AMF. Executing a manipulation can lead to denial of service. The attack may be performed from remote. This patch is called 52e9386401ce56ea773c5aa587d4cdf7d53da799. It is best practice to apply a patch to resolve this issue.","aliases":["CVE-2026-4531","GO-2026-5767"],"modified":"2026-06-25T23:11:44.514527847Z","published":"2026-03-22T03:30:25Z","database_specific":{"nvd_published_at":"2026-03-22T02:15:59Z","cwe_ids":["CWE-404"],"severity":"MODERATE","github_reviewed":true,"github_reviewed_at":"2026-03-24T20:15:30Z"},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4531"},{"type":"WEB","url":"https://github.com/free5gc/free5gc/issues/792"},{"type":"WEB","url":"https://github.com/free5gc/amf/pull/198"},{"type":"WEB","url":"https://github.com/free5gc/amf/commit/52e9386401ce56ea773c5aa587d4cdf7d53da799"},{"type":"PACKAGE","url":"https://github.com/free5gc/amf"},{"type":"WEB","url":"https://vuldb.com/?ctiid.352319"},{"type":"WEB","url":"https://vuldb.com/?id.352319"},{"type":"WEB","url":"https://vuldb.com/?submit.774073"}],"affected":[{"package":{"name":"github.com/free5gc/amf","ecosystem":"Go","purl":"pkg:golang/github.com/free5gc/amf"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.4.3-0.20260306074636-52e9386401ce"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-xq44-64rg-8g3h/GHSA-xq44-64rg-8g3h.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N"}]}