Information Disclosure

Free5GC is vulnerable to Information Disclosure. The vulnerability is due to improper request handling in the UDR endpoint GET /nudr-dr/v2/application-data/influenceData/subs-to-notify, where error responses for missing or malformed parameters do not terminate execution. As a result, processing...

Improper Access Control

github.com/free5gc/udr is vulnerable to Improper Access Control. The vulnerability is due to improper request handling in the Traffic Influence Subscription deletion endpoint, which allows an attacker to bypass validation and delete arbitrary subscriptions despite receiving a misleading 404...

CVE-2026-40248 free5gc UDR improper path validation allows unauthenticated creation and modification of Traffic Influence Subscriptions

free5GC is an open-source implementation of the 5G core network. In versions 4.2.1 and below of the UDR service, the handler for creating or updating Traffic Influence Subscriptions checks whether the influenceId path segment equals subs-to-notify, but does not return after sending the HTTP 404...

GHSA-X5R2-R74C-3W28 free5gc UDR improper path validation allows unauthenticated access to Traffic Influence Subscriptions

Summary An improper path validation vulnerability in the UDR service allows any unauthenticated attacker with access to the 5G Service Based Interface SBI to read Traffic Influence Subscriptions by supplying an arbitrary value in place of the expected subs-to-notify path segment. Details The...