{"cve":"CVE-2026-44325","nvd":{"published":"2026-05-27T17:16:37.910","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 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.","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-20","CWE-755","CWE-843"],"references":["https://github.com/free5gc/free5gc/issues/918","https://github.com/free5gc/free5gc/security/advisories/GHSA-f8qv-7x5w-qr48","https://github.com/free5gc/nrf/commit/f7bc77daa7425506af7569f2e61c2a210f5a0423","https://github.com/free5gc/nrf/pull/83","https://github.com/free5gc/free5gc/security/advisories/GHSA-f8qv-7x5w-qr48"],"products":["free5gc:free5gc"],"source":"nvd","synced_at":"2026-10-19T22:36:28.938604137+00:00"},"epss":{"cve":"CVE-2026-44325","score":0.00394,"percentile":0.33281,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-f8qv-7x5w-qr48","url":"https://osv.dev/vulnerability/GHSA-f8qv-7x5w-qr48","summary":"free5GC NRF: type-confusion panic in POST /oauth2/token structured-form parser via Reflect.Set on incompatible types","modified":"2026-06-25T19:56:30.058262807Z","packages":[{"ecosystem":"Go","name":"github.com/free5gc/nrf","purl":"pkg:golang/github.com/free5gc/nrf","ranges":["<1.4.3"],"fixed":["1.4.3"]}]},{"id":"GO-2026-5349","url":"https://osv.dev/vulnerability/GO-2026-5349","summary":"free5GC NRF: type-confusion panic in POST /oauth2/token structured-form parser via Reflect.Set on incompatible types in github.com/free5gc/nrf","modified":"2026-06-25T19:45:33.873496631Z","packages":[{"ecosystem":"Go","name":"github.com/free5gc/nrf","purl":"pkg:golang/github.com/free5gc/nrf","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."]}