How severe is CVE-2026-8187?

CVE-2026-8187 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2026-8187 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-8187?

CVE-2026-8187 affects Open5gs. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-8187?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-8187 have an EU (EUVD) identifier?

Yes. CVE-2026-8187 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-28911.

When was CVE-2026-8187 published?

CVE-2026-8187 was published on 2026-05-09 and last updated on 2026-06-17.

CVE-2026-8187

CVE-2026-8187 is a medium-severity vulnerability in Open5gs with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-400.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
CVSS v4: 6.9
EPSS exploit prediction: 1% (46th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-28911
Weakness: CWE-400
Affected product: Open5gs
Published: 2026-05-09
Last modified: 2026-06-17

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.

Frequently asked questions

What is 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.
How severe is CVE-2026-8187?: CVE-2026-8187 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2026-8187 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-8187?: CVE-2026-8187 affects Open5gs. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-8187?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-8187 have an EU (EUVD) identifier?: Yes. CVE-2026-8187 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-28911.
When was CVE-2026-8187 published?: CVE-2026-8187 was published on 2026-05-09 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:open5gs:open5gs:*:*:*:*:*:*:*:*

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