{"cve":"CVE-2026-41136","nvd":{"published":"2026-04-22T00:16:29.423","modified":"2026-10-26T22:10:00.163","status":"Analyzed","description":"free5GC AMF provides Access & Mobility Management Function (AMF) for free5GC, an an open-source project for 5th generation (5G) mobile core networks. Prior to version 1.4.3, the `HTTPUEContextTransfer` handler in `internal/sbi/api_communication.go` does not include a `default` case in the `Content-Type` switch statement. When a request arrives with an unsupported `Content-Type`, the deserialization step is silently skipped, `err` remains `nil`, and the processor is invoked with a completely uninitialized `UeContextTransferRequest` object. Version 1.4.3 contains a fix.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P","score":5.5},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","score":5.3},"cwes":["CWE-440"],"references":["https://github.com/free5gc/amf/releases/tag/v1.4.3","https://github.com/free5gc/free5gc/security/advisories/GHSA-r99v-75p9-xqm5","https://github.com/free5gc/free5gc/security/advisories/GHSA-r99v-75p9-xqm5"],"products":["free5gc:amf","free5gc:free5gc"],"source":"nvd","synced_at":"2026-10-26T22:26:44.656832877+00:00"},"epss":{"cve":"CVE-2026-41136","score":0.00282,"percentile":0.20539,"date":"2026-10-26"},"kev":null,"osv":[{"id":"GHSA-r99v-75p9-xqm5","url":"https://osv.dev/vulnerability/GHSA-r99v-75p9-xqm5","summary":"free5GC AMF: Missing default case in Content-Type switch in HTTPUEContextTransfer","modified":"2026-06-25T23:11:44.047060625Z","packages":[{"ecosystem":"Go","name":"github.com/free5gc/amf","purl":"pkg:golang/github.com/free5gc/amf","ranges":["<=1.4.3"],"fixed":[]}]},{"id":"GO-2026-5613","url":"https://osv.dev/vulnerability/GO-2026-5613","summary":"free5GC AMF: Missing default case in Content-Type switch in HTTPUEContextTransfer in github.com/free5gc/amf","modified":"2026-06-25T23:01:35.590803069Z","packages":[{"ecosystem":"Go","name":"github.com/free5gc/amf","purl":"pkg:golang/github.com/free5gc/amf","ranges":["all versions"],"fixed":[]}]}],"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."]}