{"id":"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.","aliases":["GHSA-r99v-75p9-xqm5","GO-2026-5613"],"modified":"2026-08-12T03:51:30.508706640Z","published":"2026-04-21T23:54:36.727Z","related":["openSUSE-SU-2026:21483-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41136.json","cna_assigner":"GitHub_M","cwe_ids":["CWE-440"]},"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"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/free5gc/amf","events":[{"introduced":"0"},{"fixed":"02675d949f207a95379af458c7e80fabe802d728"}],"database_specific":{"cpe":"cpe:2.3:a:free5gc:amf:*:*:*:*:*:go:*:*","extracted_events":[{"introduced":"0"},{"fixed":"1.4.3"}],"source":["AFFECTED_FIELD","CPE_RANGE","REFERENCES"]}},{"type":"GIT","repo":"https://github.com/free5gc/free5gc","events":[{"introduced":"0"},{"last_affected":"52d9545faa42efca71b1567cf7d5c5afca79f490"}],"database_specific":{"source":"CPE_RANGE","cpe":"cpe:2.3:a:free5gc:free5gc:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"last_affected":"4.2.1"}]}}],"versions":["v1.4.2","v1.4.1","v1.4.0","v1.3.2","v1.3.1","v1.3.0","v1.2.7","v1.2.6","v1.2.5","v1.2.4","v1.2.3","v1.2.2","v1.2.1","v1.2.0","v1.1.1","v1.1.0","v1.0.2","v1.0.1","v1.0.0","v4.2.1","v4.2.0","v4.1.0","v4.0.1","v4.0.0","v3.4.5","v3.4.4","v3.4.3","v3.4.2","v3.4.1","v3.4.0","v3.3.0","v3.2.1","v3.2.0","v3.1.1","v3.1.0","v3.0.7","v3.0.6","v3.0.5"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-41136.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"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"}]}