Resource exhaustion in Open5gs
CVE-2026-8187
A flaw has been found in Open5GS up to 2.7.7. This impacts the function _gtpv1_u_recv_cb of the file src/upf/gtp-path.c of the component UPF. Executing a manipulation can lead to resource consumption. The attack may be performed from remote. The project was informed of the problem early through an issue report but has not responded yet.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.009 (58.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 58th percentile — 58.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.009 · change: +0.003
Affected products
- Open5gs
- Open5gs — versions 2.7.0, 2.7.1, 2.7.2
Weakness classification (CWE)
References
- github.com/open5gs/open5gs/ (Product, product)
- github.com/open5gs/open5gs/issues/4492 (issue-tracking, Exploit, Issue Tracking)
- vuldb.com/submit/800025 (VDB Entry, Third Party Advisory, third-party-advisory)
- vuldb.com/vuln/362339 (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- vuldb.com/vuln/362339/cti (signature, Permissions Required, permissions-required, VDB Entry)
Frequently asked questions
- What is CVE-2026-8187?
- CVE-2026-8187 is a medium-severity vulnerability in Open5gs, classified under Uncontrolled Resource Consumption. CVSS score: 5.3/10. Published 2026-05-09.
- How severe is CVE-2026-8187?
- Medium severity. CVSS v3 base score is 5.3 out of 10.