{"cve":"CVE-2026-44323","nvd":{"published":"2026-05-27T17:16:37.627","modified":"2026-10-14T20:10:00.190","status":"Analyzed","description":"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 contains a nil-pointer dereference reachable from a single authenticated request, after one preparatory authenticated EE-subscription create. The handler checks _, ok = UESubsData.EeSubscriptionCollection[subsId] and sets a 404 problem-details on the miss path, but then continues to UESubsData.EeSubscriptionCollection[subsId].AmfSubscriptionInfos -- dereferencing the same missing entry instead of returning. Gin recovery converts the panic into HTTP 500, but the endpoint remains repeatedly panicable. This vulnerability is fixed in 4.2.2.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":6.5},"cwes":["CWE-476"],"references":["https://github.com/free5gc/free5gc/issues/919","https://github.com/free5gc/free5gc/security/advisories/GHSA-4rqf-grm6-vf75","https://github.com/free5gc/udr/commit/8a1d3c63be99d378806d771f086ff32f1867da99","https://github.com/free5gc/udr/pull/60"],"products":["free5gc:free5gc"],"source":"nvd","synced_at":"2026-10-19T22:36:28.938604137+00:00"},"epss":{"cve":"CVE-2026-44323","score":0.0035,"percentile":0.28418,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-4rqf-grm6-vf75","url":"https://osv.dev/vulnerability/GHSA-4rqf-grm6-vf75","summary":"free5GC's UDR nudr-dr DELETE amf-subscriptions panics on missing subsId when UE state exists (nil pointer dereference)","modified":"2026-06-25T18:56:30.993815378Z","packages":[{"ecosystem":"Go","name":"github.com/free5gc/udr","purl":"pkg:golang/github.com/free5gc/udr","ranges":["<1.4.3"],"fixed":["1.4.3"]}]},{"id":"GO-2026-5131","url":"https://osv.dev/vulnerability/GO-2026-5131","summary":"free5GC's UDR nudr-dr DELETE amf-subscriptions panics on missing subsId when UE state exists (nil pointer dereference) in github.com/free5gc/udr","modified":"2026-06-25T18:45:23.902860119Z","packages":[{"ecosystem":"Go","name":"github.com/free5gc/udr","purl":"pkg:golang/github.com/free5gc/udr","ranges":["<1.4.3"],"fixed":["1.4.3"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}