CVE-2026-44325

{"id": "CVE-2026-44325", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-44325", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-05-27T17:50:19.740036Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "free5gc", "product": "free5gc", "versions": [{"status": "affected", "version": "< 4.2.2"}]}]}], "published": "2026-05-27T17:16:37.910", "references": [{"url": "https://github.com/free5gc/free5gc/issues/918", "tags": ["Exploit", "Issue Tracking"], "source": "security-advisories@github.com"}, {"url": "https://github.com/free5gc/free5gc/security/advisories/GHSA-f8qv-7x5w-qr48", "tags": ["Exploit", "Vendor Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/free5gc/nrf/commit/f7bc77daa7425506af7569f2e61c2a210f5a0423", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/free5gc/nrf/pull/83", "tags": ["Issue Tracking", "Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/free5gc/free5gc/security/advisories/GHSA-f8qv-7x5w-qr48", "tags": ["Exploit", "Vendor Advisory"], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-20"}, {"lang": "en", "value": "CWE-755"}, {"lang": "en", "value": "CWE-843"}]}], "descriptions": [{"lang": "en", "value": "free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's NRF root SBI endpoint POST /oauth2/token contains a parser-level type-confusion bug family. The handler in NFs/nrf/internal/sbi/api_accesstoken.go reflects over models.NrfAccessTokenAccessTokenReq, special-cases only plain string and NrfNfManagementNfType fields, and treats every other field as if it were a single models.PlmnId. The parsed *models.PlmnId is then assigned with reflect.Value.Set() to whichever field name the attacker put in the form body, which panics whenever the destination field's real type is incompatible (slice, different struct, primitive). Gin recovery converts each panic into HTTP 500, but the endpoint remains remotely panicable from a single unauthenticated form-encoded request and is repeatedly triggerable. This vulnerability is fixed in 4.2.2."}, {"lang": "es", "value": "free5GC es una implementaci\u00f3n de c\u00f3digo abierto de la red central 5G. Antes de la versi\u00f3n 4.2.2, el endpoint SBI ra\u00edz NRF de free5GC POST /oauth2/token contiene una familia de errores de confusi\u00f3n de tipos a nivel de analizador. El gestor en NFs/nrf/internal/sbi/api_accesstoken.go refleja sobre models.NrfAccessTokenAccessTokenReq, trata de forma especial solo los campos de tipo cadena de texto simple y NrfNfManagementNfType, y trata cualquier otro campo como si fuera un \u00fanico models.PlmnId. El models.PlmnId analizado se asigna luego con reflect.Value.Set() a cualquier nombre de campo que el atacante haya puesto en el cuerpo del formulario, lo que provoca un p\u00e1nico cada vez que el tipo real del campo de destino es incompatible (slice, struct diferente, primitivo). La recuperaci\u00f3n de Gin convierte cada p\u00e1nico en HTTP 500, pero el endpoint sigue siendo susceptible de p\u00e1nico de forma remota desde una \u00fanica solicitud codificada en formulario no autenticada y puede ser activado repetidamente. Esta vulnerabilidad est\u00e1 corregida en la versi\u00f3n 4.2.2."}], "lastModified": "2026-10-14T20:10:00.190", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:free5gc:free5gc:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "EF7EBB95-EB4E-44C5-BF0A-9C99B0A7775F", "versionEndExcluding": "4.2.2"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}