{"cve":"CVE-2026-44322","nvd":{"published":"2026-05-27T17:16:37.480","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 NEF PATCH /3gpp-pfd-management/v1/{afId}/transactions/{transId}/applications/{appId} handler panics with a nil-pointer dereference when the upstream UDR call fails AND the consumer wrapper returns err != nil together with a nil *ProblemDetails. The handler's errPfdData != nil branch builds its own problemDetailsErr correctly, but immediately after it reads problemDetails.Cause (the OTHER value, which is nil in this branch) and panics. Gin recovery converts the panic into HTTP 500, so a single PATCH against this endpoint returns 500 instead of the intended controlled error response whenever UDR access is failing. 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:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-476","CWE-754"],"references":["https://github.com/free5gc/free5gc/issues/925","https://github.com/free5gc/free5gc/security/advisories/GHSA-j59f-x285-69jx","https://github.com/free5gc/nef/commit/72a47f3fab4dffbd227f8d92c5f69dca93b610cb","https://github.com/free5gc/nef/pull/22","https://github.com/free5gc/free5gc/security/advisories/GHSA-j59f-x285-69jx"],"products":["free5gc:free5gc"],"source":"nvd","synced_at":"2026-10-19T22:36:28.938604137+00:00"},"epss":{"cve":"CVE-2026-44322","score":0.0039,"percentile":0.32886,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-j59f-x285-69jx","url":"https://osv.dev/vulnerability/GHSA-j59f-x285-69jx","summary":"free5GC's NEF 3gpp-pfd-management PATCH applications/{appId} panics on UDR access failure due to nil ProblemDetails dereference","modified":"2026-06-25T23:11:10.234195978Z","packages":[{"ecosystem":"Go","name":"github.com/free5gc/nef","purl":"pkg:golang/github.com/free5gc/nef","ranges":["<1.2.3"],"fixed":["1.2.3"]}]},{"id":"GO-2026-5447","url":"https://osv.dev/vulnerability/GO-2026-5447","summary":"free5GC's NEF 3gpp-pfd-management PATCH applications/{appId} panics on UDR access failure due to nil ProblemDetails dereference in github.com/free5gc/nef","modified":"2026-06-25T23:00:17.527451590Z","packages":[{"ecosystem":"Go","name":"github.com/free5gc/nef","purl":"pkg:golang/github.com/free5gc/nef","ranges":["<1.2.3"],"fixed":["1.2.3"]}]}],"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."]}