CVE-2026-44315
free5GC: NEF 3gpp-pfd-management API is unauthenticated; forged bearer tokens can create, read, and delete PFD transactions
CRITICAL 9.4EPSS 0.5%
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.
- Affected
- free5gc
- CVSS v3.1 GITHUB
- 9.4 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H - EPSS
- 0.53% chance of exploitation in the next 30 days, 44th percentile
- Published
- 2026-05-27
Proof-of-concept exploits (1)
Security advisories
- free5gc/free5gc/security/advisories/GHSA-5f62-53r8-qrqf
- free5gc/free5gc/issues/858
- free5gc/nef/pull/23