free5GC AMF missing default case in Content-Type switch in HTTPUEContextTransfer_CVE-2026-41136

{
    "lastseen": "",
    "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.",
    "published": "2026-04-21T23:54:36.727Z",
    "modified": "2026-04-21T23:54:36.727Z",
    "type": "cve",
    "title": "free5GC AMF missing default case in Content-Type switch in HTTPUEContextTransfer",
    "source": "GitHub_M",
    "references": "https://github.com/free5gc/free5gc/security/advisories/GHSA-r99v-75p9-xqm5\nhttps://github.com/free5gc/amf/releases/tag/v1.4.3",
    "id": "CVE-2026-41136",
    "bulletinFamily": "",
    "cwe": [
        "CWE-440"
    ],
    "cvelist": null,
    "sourceData": "free5gc amf < 1.4.3",
    "sourceHref": "",
    "cvss": {
        "score": 5.5,
        "severity": "MEDIUM",
        "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",
        "version": "4.0"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "amf",
    "version": "< 1.4.3",
    "vendor": "free5gc",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}