{"id":"CVE-2026-4531","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":["GHSA-xq44-64rg-8g3h"],"modified":"2026-04-02T13:31:35.061648Z","published":"2026-03-22T02:15:59.270Z","references":[{"type":"WEB","url":"https://github.com/free5gc/free5gc/"},{"type":"WEB","url":"https://vuldb.com/?ctiid.352319"},{"type":"WEB","url":"https://vuldb.com/?id.352319"},{"type":"WEB","url":"https://vuldb.com/?submit.774073"},{"type":"REPORT","url":"https://github.com/free5gc/free5gc/issues/792"},{"type":"FIX","url":"https://github.com/free5gc/amf/commit/52e9386401ce56ea773c5aa587d4cdf7d53da799"},{"type":"FIX","url":"https://github.com/free5gc/amf/pull/198"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/free5gc/amf","events":[{"introduced":"0"},{"fixed":"52e9386401ce56ea773c5aa587d4cdf7d53da799"}]}],"versions":["v1.0.0","v1.0.1","v1.0.2","v1.1.0","v1.1.1","v1.2.0","v1.2.1","v1.2.2","v1.2.3","v1.2.4","v1.2.5","v1.2.6","v1.2.7","v1.3.0","v1.3.1","v1.3.2","v1.4.0","v1.4.1","v1.4.2"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-4531.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"}]}