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Fencer Vulns
high 7.5

CVE-2026-30405 json

GoBGP vulnerable to a denial of service via the NEXT_HOP path attribute

published 2026-03-16 7 mo ago modified 2026-10-02 37 d ago also GHSA-4p9m-8gc4-rw2h , GO-2026-4736 , EUVD-2026-12466

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 29%
public exploits
0
none known

Summary

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

Patch / fix

  • go github.com/osrg/gobgp/v4 4.4.0
  • gobgp Debian 14 4.3.0-1

debian advisories DEBIAN-CVE-2026-30405

  • govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1

opensuse advisories openSUSE-SU-2026:21483-1

CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
partial
Assessed
7 mo ago

Exploit prediction

0.35% chance of exploitation in the next 30 days, higher than 29% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/osrg/gobgp/issues/3305 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
GitHub 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
go github.com/osrg/gobgp/v4
<4.4.0
all versions
4.4.0
go github.com/osrg/gobgp
all versions
 no fix listed
go github.com/osrg/gobgp/v3
all versions
 no fix listed

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.