CVE-2026-10156 Open5GS nf-instances Endpoint nnrf-handler.c handle_amf_info resource consumption
Remote attackers can cause resource consumption in Open5GS via the nf-instances endpoint, leading to denial of service.
- 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-2026-10156?
CVE-2026-10156 is a medium-severity denial of service vulnerability in Open5GS, published on 30 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. This affects the function handle_amf_info in the library /lib/sbi/nnrf-handler.c of the component nf-instances Endpoint. Executing a manipulation of the argument nf_info_pool can lead to resource consumption. The attack may be performed from remote. The exploit has been publicly disclosed and may be utilized. Applying a patch is advised to resolve this issue. The issue report is flagged as already-fixed.
Which versions are affected by CVE-2026-10156?
How do I fix CVE-2026-10156?
No fix has been published for CVE-2026-10156 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-2026-10156 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-10156 exists.
Sources
Also known as GHSA-5fc4-7q74-93x4.