CVE-2026-7708 Open5GS UDR subscription.c ogs_dbi_subscription_data denial of service
Remote attackers can cause denial of service in Open5GS UDR by manipulating the supi_id argument in the subscription data function.
- 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-2026-7708?
CVE-2026-7708 is a medium-severity denial of service vulnerability in Open5GS, published on 3 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_dbi_subscription_data in the library /lib/dbi/subscription.c of the component UDR. This manipulation of the argument supi_id causes denial of service. The attack may be initiated 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-2026-7708?
How do I fix CVE-2026-7708?
No fix has been published for CVE-2026-7708 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-2026-7708 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-7708 exists.
Sources
Also known as GHSA-r5pf-5mf2-ww5v.