CVE-2026-1737 Open5GS CreateBearerRequest s5c-handler.c sgwc_s5c_handle_create_bearer_request assertion
Remote attackers can trigger a reachable assertion in Open5GS, causing a denial of service in the SGWC component.
- 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-2026-1737?
CVE-2026-1737 is a medium-severity denial of service vulnerability in Open5gs Open5gs, published on 2 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability was detected in Open5GS up to 2.7.6. The affected element is the function sgwc_s5c_handle_create_bearer_request of the file /src/sgwc/s5c-handler.c of the component CreateBearerRequest Handler. Performing a manipulation results in reachable assertion. Remote exploitation of the attack is possible. The exploit is now public and may be used. To fix this issue, it is recommended to deploy a patch. The issue report is flagged as already-fixed.
Weakness: CWE-617
Which versions are affected by CVE-2026-1737?
It affects 1 product.
Products include Open5gs Open5gs.
How do I fix CVE-2026-1737?
No fix has been published for CVE-2026-1737 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-2026-1737 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-1737 exists.
Other vulnerabilities in Open5gs Open5gs
Sources
Also known as GHSA-pvrq-5hv2-jx7r.