Vulnerability in Open5gs
CVE-2026-8731
A vulnerability has been found in Open5GS up to 2.7.7. Affected is the function ogs_sbi_client_add in the library /lib/sbi/client.c of the component NRF. The manipulation of the argument client_pool leads to denial of service. It is possible to initiate the attack remotely. 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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.007 (50.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 50.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.007 · change: +0.003
Affected products
- Open5gs
- Open5gs — versions 2.7.0, 2.7.1, 2.7.2
Weakness classification (CWE)
References
- vuldb.com/vuln/364320 (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- vuldb.com/vuln/364320/cti (signature, Permissions Required, permissions-required, VDB Entry)
- vuldb.com/submit/808516 (VDB Entry, Third Party Advisory, third-party-advisory)
- github.com/open5gs/open5gs/issues/4464 (issue-tracking, Exploit, exploit, Issue Tracking)
- github.com/open5gs/open5gs/ (Product, product)
Frequently asked questions
- What is CVE-2026-8731?
- CVE-2026-8731 is a medium-severity vulnerability in Open5gs, classified under Improper Resource Shutdown or Release. CVSS score: 4.3/10. Published 2026-05-17.
- How severe is CVE-2026-8731?
- Medium severity. CVSS v3 base score is 4.3 out of 10.