CVE-2026-8730 Open5GS NRF context.c ogs_sbi_nf_instance_set_id denial of service
Remote attackers can cause denial of service in Open5GS NRF by manipulating the nfInstanceId argument in the context library.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-8730?
CVE-2026-8730 is a medium-severity denial of service vulnerability in Open5gs Open5gs, published on 17 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A flaw has been found in Open5GS up to 2.7.6. This impacts the function ogs_sbi_nf_instance_set_id in the library /lib/sbi/context.c of the component NRF. Executing a manipulation of the argument nfInstanceId can lead to denial of service. The attack may be performed from remote. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.
Weakness: CWE-404
Which versions are affected by CVE-2026-8730?
It affects 1 product.
Products include Open5gs Open5gs.
How do I fix CVE-2026-8730?
No fix has been published for CVE-2026-8730 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-8730 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-8730 exists.
Other vulnerabilities in Open5gs Open5gs
Sources
Also known as GHSA-8hvv-fjpf-3cxr.