CVE-2026-44321

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 inbound OAuth2 middleware. The POST /upi/v1/upNodesLinks create-or-update handler accepts attacker-controlled JSON and passes it directly into...

CVE-2026-44321 free5GC: SMF UPI POST /upi/v1/upNodesLinks exits the SMF process on overlapping UE pools (unauthenticated, reachable Fatalf)

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 inbound OAuth2 middleware. The POST /upi/v1/upNodesLinks create-or-update handler accepts attacker-controlled JSON and passes it directly into...

CVE-2026-44329 free5GC: SMF UPI management interface lacks auth middleware; unauthenticated topology read/write requests reach handlers

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...

CVE-2026-44329

CVE-2026-44329 affects free5GC SMF v4.2.1 where the UPI management route group is mounted without OAuth2/bearer-token auth. Consequently, unauthenticated requests to /upi/v1/upNodesLinks (GET, POST with attacker-controlled payload, DELETE /upi/v1/upNodesLinks/{nodeID}) can reach SMF business hand...

free5GC 安全漏洞

free5GC is an open-source project for the 5th generation 5G mobile core network. Versions of free5GC prior to 4.2.2 contained security vulnerabilities. These vulnerabilities stemmed from SMF failing to include the necessary inbound OAuth2 middleware when mounting UPI management routing groups. Th...

Missing Authorization

Overview Affected versions of this package are vulnerable to Missing Authorization due to the absence of authentication and authorization checks in the UPI management interface. An attacker can gain unauthorized access to read, modify, or delete UP-node and link topology data by sending...