{"id":"CVE-2026-44322","sourceIdentifier":"security-advisories@github.com","published":"2026-05-27T17:16:37.480","lastModified":"2026-10-14T20:10:00.190","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"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."},{"lang":"es","value":"free5GC es una implementación de código abierto de la red central 5G. Antes de la versión 4.2.2, el gestor NEF PATCH /3gpp-pfd-management/v1/{afId}/transactions/{transId}/applications/{appId} de free5GC entra en pánico con una desreferencia de puntero nulo cuando la llamada UDR ascendente falla Y el envoltorio del consumidor devuelve err != nil junto con un ProblemDetails nulo. La rama errPfdData != nil del gestor construye su propio problemDetailsErr correctamente, pero inmediatamente después lee problemDetails.Cause (el OTRO valor, que es nulo en esta rama) y entra en pánico. La recuperación de Gin convierte el pánico en HTTP 500, por lo que un único PATCH contra este endpoint devuelve 500 en lugar de la respuesta de error controlada prevista cada vez que el acceso UDR falla. Esta vulnerabilidad se corrige en la versión 4.2.2."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"free5gc","product":"free5gc","versions":[{"version":"< 4.2.2","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-05-28T14:41:42.971095Z","id":"CVE-2026-44322","options":[{"exploitation":"poc"},{"automatable":"yes"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-476"},{"lang":"en","value":"CWE-754"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:free5gc:free5gc:*:*:*:*:*:*:*:*","versionEndExcluding":"4.2.2","matchCriteriaId":"EF7EBB95-EB4E-44C5-BF0A-9C99B0A7775F"}]}]}],"references":[{"url":"https://github.com/free5gc/free5gc/issues/925","source":"security-advisories@github.com","tags":["Exploit","Issue Tracking"]},{"url":"https://github.com/free5gc/free5gc/security/advisories/GHSA-j59f-x285-69jx","source":"security-advisories@github.com","tags":["Exploit","Vendor Advisory"]},{"url":"https://github.com/free5gc/nef/commit/72a47f3fab4dffbd227f8d92c5f69dca93b610cb","source":"security-advisories@github.com","tags":["Patch"]},{"url":"https://github.com/free5gc/nef/pull/22","source":"security-advisories@github.com","tags":["Issue Tracking","Patch"]},{"url":"https://github.com/free5gc/free5gc/security/advisories/GHSA-j59f-x285-69jx","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","tags":["Exploit","Vendor Advisory"]}]}