Vulnerability Description
free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's NEF PATCH /3gpp-pfd-management/v1/{afId}/transactions/{transId}/applications/{appId} handler panics with a nil-pointer dereference when the upstream UDR call fails AND the consumer wrapper returns err != nil together with a nil *ProblemDetails. The handler's errPfdData != nil branch builds its own problemDetailsErr correctly, but immediately after it reads problemDetails.Cause (the OTHER value, which is nil in this branch) and panics. Gin recovery converts the panic into HTTP 500, so a single PATCH against this endpoint returns 500 instead of the intended controlled error response whenever UDR access is failing. This vulnerability is fixed in 4.2.2.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Free5Gc | Free5Gc | < 4.2.2 |
Related Weaknesses (CWE)
References
- https://github.com/free5gc/free5gc/issues/925ExploitIssue Tracking
- https://github.com/free5gc/free5gc/security/advisories/GHSA-j59f-x285-69jxExploitVendor Advisory
- https://github.com/free5gc/nef/commit/72a47f3fab4dffbd227f8d92c5f69dca93b610cbPatch
- https://github.com/free5gc/nef/pull/22Issue TrackingPatch
- https://github.com/free5gc/free5gc/security/advisories/GHSA-j59f-x285-69jxExploitVendor Advisory
FAQ
What is CVE-2026-44322?
CVE-2026-44322 is a vulnerability with a CVSS score of 7.5 (HIGH). free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's NEF PATCH /3gpp-pfd-management/v1/{afId}/transactions/{transId}/applications/{appId} handler panics with a ni...
How severe is CVE-2026-44322?
CVE-2026-44322 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-44322?
Check the references section above for vendor advisories and patch information. Affected products include: Free5Gc Free5Gc.