Upstream information
Description
free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's SMF mounts the UPI management route group without OAuth2/bearer-token authorization middleware. A network attacker who can reach SMF on the SBI can hit UPI endpoints with no Authorization header at all, and the requests reach the SMF business handlers. In the running Docker lab this was directly demonstrated for read (GET /upi/v1/upNodesLinks), write (POST /upi/v1/upNodesLinks with attacker-controlled UP-node and link payload), and delete (DELETE /upi/v1/upNodesLinks/{nodeID}) operations. This vulnerability is fixed in 4.2.2.SUSE information
Overall state of this security issue: Resolved
This issue is currently rated as having critical severity.
| CVSS detail | CNA (GitHub) |
|---|---|
| Base Score | 10 |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:H |
| Attack Vector | Network |
| Attack Complexity | Low |
| Privileges Required | None |
| User Interaction | None |
| Scope | Changed |
| Confidentiality Impact | Low |
| Integrity Impact | High |
| Availability Impact | High |
| CVSSv3 Version | 3.1 |
List of released packages
| Product(s) | Fixed package version(s) | References |
|---|---|---|
| SUSE Linux Enterprise Server 16.1 |
| Patchnames: SUSE Linux Enterprise Server 16.1 GA govulncheck-vulndb-0.0.20260916T180043-160100.1.1 (aarch64,ppc64le,s390x,x86_64) |
| SUSE Linux Enterprise Server for SAP applications 16.1 |
| Patchnames: SUSE Linux Enterprise Server for SAP applications 16.1 GA govulncheck-vulndb-0.0.20260916T180043-160100.1.1 (aarch64,ppc64le,s390x,x86_64) |
SUSE Timeline for this CVE
CVE page created: Thu Jul 30 15:08:28 2026CVE page last modified: Wed Oct 28 14:04:02 2026