CVE-2026-8728 Open5GS NRF conv.c ogs_sbi_discovery_option_parse_plmn_list denial of service
Remote attackers can cause a denial of service in Open5GS NRF by manipulating the target-plmn-list argument in the discovery option parser.
- 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-2026-8728?
CVE-2026-8728 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 security vulnerability has been detected in Open5GS up to 2.7.7. The impacted element is the function ogs_sbi_discovery_option_parse_plmn_list in the library /lib/sbi/conv.c of the component NRF. Such manipulation of the argument target-plmn-list leads to denial of service. The attack can be executed remotely. The exploit has been disclosed publicly 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-2026-8728?
It affects 1 product.
Products include Open5gs Open5gs.
How do I fix CVE-2026-8728?
No fix has been published for CVE-2026-8728 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-2026-8728 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-8728 exists.
Other vulnerabilities in Open5gs Open5gs
Sources
Also known as GHSA-cgrm-wwh5-v7w8.