CVE-2026-44315

free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's NEF mounts the 3gpp-pfd-management API without inbound OAuth2/bearer-token authorization. A network attacker who can reach NEF on the SBI can create, read, and delete PFD-management transaction state with a forged or arbitrary bearer token (e.g. Authorization: Bearer not-a-real-token). The route group is also reachable even when the running config's ServiceList does not declare it, so operators who think they disabled the service via config are still exposed. This vulnerability is fixed in 4.2.2.

• CWE-862

• https://github.com/free5gc/free5gc/issues/858Exploit, Issue Tracking
• https://github.com/free5gc/free5gc/security/advisories/GHSA-5f62-53r8-qrqfExploit, Vendor Advisory
• https://github.com/free5gc/nef/pull/23Issue Tracking
• https://github.com/free5gc/free5gc/security/advisories/GHSA-5f62-53r8-qrqfExploit, Vendor Advisory

Published

May 27, 2026

Last Modified

Jun 17, 2026

Status

Analyzed

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