medium5.3
CVE-2026-4531
Free5GC AMF is vulnerable to DoS through its HandleRegistrationComplete function
Impact
A weakness has been identified in Free5GC 4.1.0. Affected is the function HandleRegistrationComplete of the file internal/gmm/handler.go of the component AMF. Executing a manipulation can lead to denial of service. The attack may be performed from remote. This patch is called 52e9386401ce56ea773c5aa587d4cdf7d53da799. It is best practice to apply a patch to resolve this issue.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | github.com/free5gc/amf | < 1.4.3-0.20260306074636-52e9386401ce | 1.4.3-0.20260306074636-52e9386401ce |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-xq44-64rg-8g3h
- https://nvd.nist.gov/vuln/detail/CVE-2026-4531
- https://github.com/free5gc/free5gc/issues/792
- https://github.com/free5gc/amf/pull/198
- https://github.com/free5gc/amf/commit/52e9386401ce56ea773c5aa587d4cdf7d53da799
- https://vuldb.com/?ctiid.352319
- https://vuldb.com/?id.352319
- https://vuldb.com/?submit.774073
- https://github.com/free5gc/free5gc/