🛡️ CVE-2026-40343
🟡 CVSS 5.8 — Medium ✅ No Known Exploit CWE-754 NVD
5.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

free5GC UDR is the user data repository (UDR) for free5GC, an an open-source project for 5th generation (5G) mobile core networks. In versions up to and including 1.4.2, a fail-open request handling flaw in the UDR service causes the `/nudr-dr/v2/policy-data/subs-to-notify` POST handler to continue processing requests even after request body retrieval or deserialization errors. This may allow unintended creation of Policy Data notification subscriptions with invalid, empty, or partially processed input, depending on downstream processor behavior. As of time of publication, a patched version is not available.

Details

Severity MEDIUM
CVSS Score 5.8
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
CWE CWE-754
Public Exploit ✅ No
Source NVD
Published 2026-04-22
Updated 2026-06-02
Modified 2026-04-23

Affected Packages

Software From version Fixed in
free5gc 4.2.1
github.com/free5gc/udr
udr 1.4.2

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