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TI-2026-23526 Aliases CVE-2026-30405GHSA-4p9m-8gc4-rw2h

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

Priority HIGH 72CWE-400Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and GitHub. Impact type from CWE-400.

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

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00354 29th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed github.com/osrg/gobgp/v4 (Go): 4.4.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
—github.com/osrg/gobgp/v4 (Go)before 4.4.04.4.0Patch availableGHSA-4p9m-8gc4-rw2h
  • — Vendor— Affected all versions Fixed in — No fix listed CNA
  • github.com/osrg/gobgp/v4 (Go) Vendor— Affected before 4.4.0 Fixed in 4.4.0 Patch available GHSA-4p9m-8gc4-rw2h

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:osrg:gobgp:4.2.0:*:*:*:*:*:*:*4.2.0Vulnerableosrg
  • cpe:2.3:a:osrg:gobgp:4.2.0:*:*:*:*:*:*:* Versions 4.2.0 Vulnerable ·osrg

Remediation

  • Fix · GHSA-4p9m-8gc4-rw2h github.com/osrg/gobgp/v4 (Go) Fixed in 4.4.0 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-30405
  2. 2026-10-03 Alias added: GHSA-4p9m-8gc4-rw2h

References

Exploit 1

Advisory 1

Other 3

  • TI-2026-30596 GoBGP: Panic in AdjRib.Update via malformed BGP Update message (Nil Pointer Dereference) CVSS 3.1HIGH 7.5
  • TI-2026-30162 GoBGP: Remote Denial of Service (Panic) in UpdatePathAttrs4ByteAs via Malformed BGP UPDATE CVSS 3.1HIGH 7.5
  • TI-2026-30161 GoBGP: Remote Denial of Service (Panic) via Malformed Well-known Path Attribute CVSS 3.1HIGH 7.5
  • TI-2025-28529 An issue was discovered in GoBGP before 3.35.0. CVSS 3.1HIGH 8.6
  • TI-2025-28531 An issue was discovered in GoBGP before 3.35.0. CVSS 3.1CRITICAL 9.8
  • TI-2026-28050 An out-of-bounds read in the ParseIP6Extended function (/bgp/bgp.go) of gobgp v4.3.0… CVSS 3.1HIGH 7.5
See all 15 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences