CVE-2026-33192
Published: Mar 20, 2026
Modified: Mar 20, 2026
Description
Free5GC is an open-source Linux Foundation project for 5th generation (5G) mobile core networks. In versions prior to 1.4.2, the UDM incorrectly converts a downstream 400 Bad Request (from UDR) into a 500 Internal Server Error when handling PATCH requests with an empty supi path parameter. Additionally, the UDM incorrectly translates the PATCH method to PUT when forwarding to UDR, indicating a deeper architectural issue. This leaks internal error handling behavior, making it difficult for clients to distinguish between client-side errors and server-side failures. The issue has been patched in version 1.4.2.
| Vendor | Product | Versions |
|---|---|---|
free5gc | free5gc | affected < 1.4.2 |
Weaknesses (CWE)
References
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