CVE-2026-40343 free5GC UDR: Fail-open handling in PolicyDataSubsToNotifyPost allows unintended subscription creation

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...

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PT-2026-34214

Name of the Vulnerable Software and Affected Versions free5GC UDR versions prior to 1.4.3 Description A fail-open request handling flaw exists in the UDR service. The POST handler for the endpoint '/nudr-dr/v2/policy-data/subs-to-notify' continues to process requests even after encountering error...

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