What is CVE-2026-30405?

CVE-2026-30405 is a high-severity vulnerability in Osrg Gobgp, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-03-16.

How severe is CVE-2026-30405?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in Osrg Gobgp

CVE-2026-30405

An issue in GoBGP gobgpd v.4.2.0 allows a remote attacker to cause a denial of service via the NEXT_HOP path attribute

Vulnerability class: DoS (Denial of Service)

Published 2026-03-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.003 (27.9th percentile), scored 2026-10-26.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 28th percentile — 27.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.003 · change: -0.002

Affected products

Osrg Gobgp — versions 4.2.0

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

github.com/osrg/gobgp/issues/3305 (Exploit, Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2026-30405?: CVE-2026-30405 is a high-severity vulnerability in Osrg Gobgp, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-03-16.
How severe is CVE-2026-30405?: High severity. CVSS v3 base score is 7.5 out of 10.