CVE-2026-41136

· MEDIUMAnalyzed

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CVSS v3.1

5.3

CVSS v4.0

5.5

EPSS

0.28%

Published

Apr 21, 2026

Modified

Apr 23, 2026

Public PoC / Exploit (1)

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Links to public security research (Exploit-DB, Nuclei, Trickest, GitHub) for defensive use only.

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.

CVSS Vector

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

Weaknesses (CWE)

CWE-440

Affected Products (2)

free5gc · amf (up to 1.4.3)vulnerable

free5gc · free5gcvulnerable

References (3)

https://github.com/free5gc/amf/releases/tag/v1.4.3

ProductRelease Notes

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

ExploitVendor Advisory

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

ExploitVendor Advisory

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