{"id":"CVE-2026-44324","title":"free5GC is an open-source implementation of the 5G core network","summary":"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 …","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-704","CWE-754"],"vendor":"free5gc","product":"free5gc","affected":["free5gc < 4.2.2"],"patched":["free5gc 4.2.2"],"published":"2026-05-27","updated":"2026-10-14","sourceUpdated":"2026-10-14T20:10:00.190","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-44324","references":[{"url":"https://github.com/free5gc/free5gc/issues/920","label":"security-advisories@github.com"},{"url":"https://github.com/free5gc/free5gc/security/advisories/GHSA-jqfc-gwj5-3w63","label":"security-advisories@github.com"},{"url":"https://github.com/free5gc/udr/commit/8a1d3c63be99d378806d771f086ff32f1867da99","label":"security-advisories@github.com"},{"url":"https://github.com/free5gc/udr/pull/60","label":"security-advisories@github.com"},{"url":"https://github.com/free5gc/free5gc/issues/920","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"},{"url":"https://github.com/free5gc/free5gc/security/advisories/GHSA-jqfc-gwj5-3w63","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd"],"epss":0.00698,"epssPercentile":0.52017,"ingestedAt":"2026-10-14T20:53:12.331Z","slug":"CVE-2026-44324","body":"## Overview\n\nfree5GC 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.\n\n## Affected\n\n- `free5gc < 4.2.2`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `free5gc 4.2.2`","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}