CVE-2026-41136

MEDIUM

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.

CVE Details

CVSS v3.1 Score5.3

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published4/22/2026

Last Modified4/23/2026

Sourcenvd

Honeypot Sightings0

Affected Products

free5gc:amffree5gc:free5gc

Weaknesses (CWE)

CWE-440

References

https://github.com/free5gc/amf/releases/tag/v1.4.3(security-advisories@github.com)

https://github.com/free5gc/free5gc/security/advisories/GHSA-r99v-75p9-xqm5(security-advisories@github.com)

https://github.com/free5gc/free5gc/security/advisories/GHSA-r99v-75p9-xqm5(134c704f-9b21-4f2e-91b3-4a467353bcc0)

IOC Correlations

No correlations recorded

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