# CVE-2026-41136

> Vulnerability · severity: **MEDIUM** (CVSS 5.3).

## 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.

## Key facts

- **CVE ID:** CVE-2026-41136
- **Published:** 2026-04-22
- **CVSS severity:** MEDIUM
- **CVSS base score:** 5.3
- **CWE codes:** CWE-440

## Affected products

- `free5gc:amf`
- `free5gc:free5gc`

## Primary sources

- NIST NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-41136

## Citation

> AI Analytics. CVE-2026-41136. Retrieved 2026-07-23 from https://api.ai-analytics.org/cve/CVE-2026-41136. Derived from NIST NVD. Licensed CC0.

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