{"id":"CVE-2026-44324","summary":"free5GC: UDR nudr-dr DELETE amf-subscriptions panics on missing UE state via nil interface type assertion (single authenticated request)","details":"free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's UDR nudr-dr DELETE /subscription-data/{ueId}/{servingPlmnId}/ee-subscriptions/{subsId}/amf-subscriptions handler panics on a single authenticated request against a fresh UDR instance when the supplied ueId does not exist in UESubsCollection. The processor checks value, ok := udrSelf.UESubsCollection.Load(ueId) and sets a 404 USER_NOT_FOUND problem-details on the miss path, but execution continues and immediately runs value.(*udr_context.UESubsData) -- a Go type assertion on a nil interface, which panics with interface conversion: interface {} is nil, not *context.UESubsData. Gin recovery converts the panic into HTTP 500, but the endpoint remains repeatedly panicable. This vulnerability is fixed in 4.2.2.","aliases":["GHSA-jqfc-gwj5-3w63"],"modified":"2026-05-30T04:01:49.935691649Z","published":"2026-05-27T15:44:27.616Z","database_specific":{"cwe_ids":["CWE-704","CWE-754"],"cna_assigner":"GitHub_M","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44324.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44324.json"},{"type":"ADVISORY","url":"https://github.com/free5gc/free5gc/security/advisories/GHSA-jqfc-gwj5-3w63"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-44324"},{"type":"REPORT","url":"https://github.com/free5gc/free5gc/issues/920"},{"type":"FIX","url":"https://github.com/free5gc/udr/commit/8a1d3c63be99d378806d771f086ff32f1867da99"},{"type":"FIX","url":"https://github.com/free5gc/udr/pull/60"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/free5gc/free5gc","events":[{"introduced":"0"},{"fixed":"8b0f4445fc931638fb624463ce3572a203517679"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"4.2.2"}],"cpe":"cpe:2.3:a:free5gc:free5gc:*:*:*:*:*:*:*:*","source":"CPE_RANGE"}}],"versions":["v4.2.1","v4.2.0","v4.1.0","v4.0.1","v4.0.0","v3.4.5","v3.4.4","v3.4.3","v3.4.2","v3.4.1","v3.4.0","v3.3.0","v3.2.1","v3.2.0","v3.1.1","v3.1.0","v3.0.7","v3.0.6","v3.0.5"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-44324.json"}},{"ranges":[{"type":"GIT","repo":"https://github.com/free5gc/udr","events":[{"introduced":"0"},{"fixed":"8a1d3c63be99d378806d771f086ff32f1867da99"}],"database_specific":{"source":"REFERENCES"}}],"versions":["v1.4.2","v1.4.1","v1.4.0","v1.3.2","v1.3.1","v1.3.0","v.1.2.5","v1.2.4","v1.2.3","v1.2.2","v1.2.1","v1.2.0","v1.1.1","v1.1.0","v1.0.2","v1.0.1","v1.0.0"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-44324.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}