CVE-2026-8222 Open5GS sm-policies Endpoint nbsf-handler.c pcf_nbsf_management_handle_register denial of service
Remote attackers can cause a denial of service in Open5GS by exploiting a flaw in the sm-policies endpoint, requiring immediate attention from network operators.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-8222?
CVE-2026-8222 is a medium-severity denial of service vulnerability in Open5gs Open5gs, published on 10 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability has been found in Open5GS up to 2.7.7. Affected is the function pcf_nbsf_management_handle_register of the file src/pcf/nbsf-handler.c of the component sm-policies Endpoint. Such manipulation leads to denial of service. The attack may be performed from remote. The exploit has been disclosed to the 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-2026-8222?
It affects 1 product.
Products include Open5gs Open5gs.
How do I fix CVE-2026-8222?
No fix has been published for CVE-2026-8222 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-2026-8222 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-8222 exists.
Other vulnerabilities in Open5gs Open5gs
Sources
Also known as GHSA-xm8g-256c-hjqj.