High 7.5Published May 7, 2026

CVE-2026-41642GoBGP: Remote Denial of Service (Panic) via Malformed Well-known Path Attribute

Updated under an hour ago (Oct 27, 2026, 9:10 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for osrg gobgp

Exploited in the last 30 days

GoBGP is an open source Border Gateway Protocol (BGP) implementation in the Go Programming Language. In version 4.3.0, a remote Denial of Service (DoS) vulnerability exists in GoBGP due to a nil pointer dereference. When a malformed BGP UPDATE message contains an unrecognized Path Attribute marked as "Well-known," the daemon fails to interrupt the message handling flow. This results in an illegal memory access and a full process crash (panic). This issue has been patched in version 4.4.0.

CVSS: 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-476
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: May 7, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

osrg gobgp osrg:gobgp (from the name)	= 4.3.0	CNA record
osrg gobgp osrg:gobgp	4.3.0	NVD

References

References

https://github.com/osrg/gobgp/security/advisories/GHSA-7235-89m6-f4px	x-refsource-confirm, exploit, vendor-advisory
https://github.com/osrg/gobgp/releases/tag/v4.4.0	x-refsource-misc, patch, product

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.