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VULNERABILITIES

CVE-2026-41642 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/osrg/gobgp/security/advisories/GHSA-7235-89m6-f4px CISA-ADPExploitVendor Advisory
https://github.com/osrg/gobgp/releases/tag/v4.4.0 [email protected]PatchProduct
https://github.com/osrg/gobgp/security/advisories/GHSA-7235-89m6-f4px [email protected]ExploitVendor Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-476NULL Pointer Dereference[email protected]

Affected Products

ProductVersions
osrg gobgp
4.3.0

CPE

  • cpe:2.3:a:osrg:gobgp:4.3.0:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

5 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-41642
NVD Published Date:
May 7, 2026
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2026-41642 Details - Not Deferred