CVE-2026-8270 Open5GS SMF ogs_nas_parse_qos_rules denial of service
Remote attackers can cause a denial of service in Open5GS SMF by manipulating QoS rules, affecting 5G core network availability.
- 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-2026-8270?
CVE-2026-8270 is a medium-severity denial of service vulnerability in Open5gs Open5gs, published on 11 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability was determined in Open5GS up to 2.7.7. The affected element is the function ogs_nas_parse_qos_rules of the component SMF. Executing a manipulation can lead to denial of service. The attack can be executed remotely. The exploit has been publicly disclosed and may be utilized. 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-2026-8270?
It affects 1 product.
Products include Open5gs Open5gs.
How do I fix CVE-2026-8270?
No fix has been published for CVE-2026-8270 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-2026-8270 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-8270 exists.
Other vulnerabilities in Open5gs Open5gs
Sources
Also known as GHSA-gmmh-vcqp-grjc.