CVE-2026-41136
free5GC AMF missing default case in Content-Type switch in HTTPUEContextTransfer
- State
- Published
- Severity
- 5.5 Medium
- Published
- Apr 21, 2026
- Updated
- Apr 22, 2026
- Reserved
- Apr 17, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.5 Medium | 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 | GitHub_M |
Weaknesses
- CWE-440 Expected Behavior Violation
Affected Products
| Product | Versions |
|---|---|
amffree5gc |
|
References
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