CVE-2026-30405 json
GoBGP vulnerable to a denial of service via the NEXT_HOP path attribute
published 7mo ago modified last mo. 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
Is CVE-2026-30405 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 7mo ago
Exploit prediction
0.35% chance of exploitation in the next 30 days, higher than 29% of all scored CVEs (FIRST EPSS, 2026-11-09).
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
-
github.com
/osrg/gobgp/commit/583080a7258e22cc884162e15b078771aa2c2c80
web, patch
-
github.com
/osrg/gobgp/issues/3305
web, exploit, issue-tracking, vendor-advisory, report
-
nvd.nist.gov
/vuln/detail/CVE-2026-30405
advisory
-
github.com
/osrg/gobgp
package
-
github.com
/osrg/gobgp/releases/tag/v4.4.0
web
-
github.com
/advisories/GHSA-4p9m-8gc4-rw2h
advisory
Sources
- CVE List CVE-2026-30405
- GitHub Advisory GHSA-4p9m-8gc4-rw2h
- NVD CVE-2026-30405
- OSV GO-2026-4736
Fencer Intel 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.