CVE-2026-44324

free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's UDR nudr-dr DELETE /subscription-data/{ueId}/{servingPlmnId}/ee-subscriptions/{subsId}/amf-subscriptions handler panics on a single authenticated request against a fresh UDR instance when the supplied ueId does not exist in UESubsCollection. The processor checks value, ok := udrSelf.UESubsCollection.Load(ueId) and sets a 404 USER_NOT_FOUND problem-details on the miss path, but execution continues and immediately runs value.(*udr_context.UESubsData) -- a Go type assertion on a nil interface, which panics with interface conversion: interface {} is nil, not *context.UESubsData. Gin recovery converts the panic into HTTP 500, but the endpoint remains repeatedly panicable. This vulnerability is fixed in 4.2.2.

• CWE-704
• CWE-754

• https://github.com/free5gc/free5gc/issues/920Exploit, Issue Tracking
• https://github.com/free5gc/free5gc/security/advisories/GHSA-jqfc-gwj5-3w63Exploit, Vendor Advisory
• https://github.com/free5gc/udr/commit/8a1d3c63be99d378806d771f086ff32f1867da99Patch
• https://github.com/free5gc/udr/pull/60Issue Tracking, Patch
• https://github.com/free5gc/free5gc/issues/920Exploit, Issue Tracking
• https://github.com/free5gc/free5gc/security/advisories/GHSA-jqfc-gwj5-3w63Exploit, Vendor Advisory

Published

May 27, 2026

Last Modified

Jun 17, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-44319free5GC is an open-source implementation of the 5G core netw…7.5
• CVE-2026-4432The YITH WooCommerce Wishlist WordPress plugin before 4.13.0…6.5
• CVE-2026-44320free5GC is an open-source implementation of the 5G core netw…7.3
• CVE-2026-44321free5GC is an open-source implementation of the 5G core netw…7.5
• CVE-2026-44322free5GC is an open-source implementation of the 5G core netw…7.5
• CVE-2026-44323free5GC is an open-source implementation of the 5G core netw…6.5
• CVE-2026-44325free5GC is an open-source implementation of the 5G core netw…7.5
• CVE-2026-44326free5GC is an open-source implementation of the 5G core netw…9.4
• CVE-2026-44327free5GC is an open-source implementation of the 5G core netw…10
• CVE-2026-44328free5GC is an open-source implementation of the 5G core netw…8.2
• CVE-2026-44329free5GC is an open-source implementation of the 5G core netw…10
• CVE-2026-4433An SSH misconfigurations exists in Tenable OT that led to th…1.9