CVE-2026-8729 Open5GS NRF message.c denial of service
Remote attackers can cause denial of service in Open5GS NRF by manipulating service-names/snssais arguments in message.c.
- 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-2026-8729?
CVE-2026-8729 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 vulnerability was detected in Open5GS up to 2.7.7. This affects an unknown function in the library /lib/sbi/message.c of the component NRF. Performing a manipulation of the argument service-names/snssais results in denial of service. The attack is possible to be carried out remotely. The exploit is now public 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-2026-8729?
It affects 1 product.
Products include Open5gs Open5gs.
How do I fix CVE-2026-8729?
No fix has been published for CVE-2026-8729 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-2026-8729 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-8729 exists.
Other vulnerabilities in Open5gs Open5gs
Sources
Also known as GHSA-4r7x-pm54-qxq9.