{"id":"CVE-2026-44317","sourceIdentifier":"security-advisories@github.com","published":"2026-05-27T17:16:36.723","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 PCF POST /npcf-policyauthorization/v1/app-sessions handler panics on a single authenticated request whose ascReqData.suppFeat == \"1\" (enabling traffic-routing feature negotiation) and whose medComponents entries supply an afAppId but NO AfRoutReq. The create path then calls provisioningOfTrafficRoutingInfo(smPolicy, appID, routeReq, ...) with routeReq == nil and dereferences routeReq.RouteToLocs (and other fields) without a nil check, causing runtime error: invalid memory address or nil pointer dereference. Gin recovery converts the panic into HTTP 500. 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 PCF POST /npcf-policyauthorization/v1/app-sessions de free5GC entra en pánico ante una única solicitud autenticada cuyo ascReqData.suppFeat == '1' (habilitando la negociación de la característica de enrutamiento de tráfico) y cuyas entradas medComponents proporcionan un afAppId pero NO un AfRoutReq. La ruta de creación luego llama a provisioningOfTrafficRoutingInfo(smPolicy, appID, routeReq, ...) con routeReq == nil y desreferencia routeReq.RouteToLocs (y otros campos) sin una verificación de nulo, causando un error en tiempo de ejecución: dirección de memoria inválida o desreferencia de puntero nulo. La recuperación de Gin convierte el pánico en HTTP 500. Esta vulnerabilidad está corregida 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:L/UI:N/S:U/C:N/I:N/A:H","baseScore":6.5,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":2.8,"impactScore":3.6}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-05-28T14:45:45.407067Z","id":"CVE-2026-44317","options":[{"exploitation":"poc"},{"automatable":"no"},{"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/879","source":"security-advisories@github.com","tags":["Exploit","Issue Tracking"]},{"url":"https://github.com/free5gc/free5gc/security/advisories/GHSA-wwqh-7jm5-gj7w","source":"security-advisories@github.com","tags":["Exploit","Vendor Advisory"]},{"url":"https://github.com/free5gc/pcf/commit/508d70b8527a6c8c923179dad450ea01e16b6aeb","source":"security-advisories@github.com","tags":["Patch"]},{"url":"https://github.com/free5gc/pcf/pull/65","source":"security-advisories@github.com","tags":["Issue Tracking","Patch"]},{"url":"https://github.com/free5gc/free5gc/security/advisories/GHSA-wwqh-7jm5-gj7w","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","tags":["Exploit","Vendor Advisory"]}]}