{"id":"CVE-2026-41136","aliases":["GHSA-r99v-75p9-xqm5","GO-2026-5613"],"url":"https://o3.security/vulnerability/CVE-2026-41136","summary":"free5GC AMF missing default case in Content-Type switch in HTTPUEContextTransfer","details":"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.","published":"2026-04-21T23:54:36.727Z","modified":"2026-08-07T11:51:03.036197105Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/free5gc/amf","fixedVersion":null}],"fix":null,"references":[{"type":"WEB","url":"https://github.com/free5gc/amf/releases/tag/v1.4.3"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41136.json"},{"type":"ADVISORY","url":"https://github.com/free5gc/free5gc/security/advisories/GHSA-r99v-75p9-xqm5"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-41136"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T11:51:03.036197105Z"}}