CVE-2026-8187

Name: CVE-2026-8187
Creator: NVD / NIST
Published: 2026-05-09T11:16:28.53+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.9/10EPSS 0.64%

Last modified Jun 17, 2026

CVE-2026-8187 is a medium-severity vulnerability rated 6.9/10 on the CVSS scale. 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. EPSS estimates a 0.64% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS 4.0

6.9/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.64%

45.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Open5gs	Open5gs	<= 2.7.7

References

https://github.com/open5gs/open5gs/Product
https://github.com/open5gs/open5gs/issues/4492Exploit, Issue Tracking
https://vuldb.com/submit/800025Third Party Advisory, VDB Entry
https://vuldb.com/vuln/362339Third Party Advisory, VDB Entry
https://vuldb.com/vuln/362339/ctiPermissions Required, VDB Entry
https://github.com/open5gs/open5gs/issues/4492Exploit, Issue Tracking

Timeline

Published: May 9, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-8187?

How severe is CVE-2026-8187?

CVE-2026-8187 has a CVSS score of 6.9/10 (MEDIUM severity). The EPSS model estimates a 0.64% probability of exploitation in the next 30 days.

How do I fix CVE-2026-8187?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-8187?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST