CVE-2026-41643

7.5 HIGH
Published: May 07, 2026 Modified: May 07, 2026
View on NVD

Description

GoBGP is an open source Border Gateway Protocol (BGP) implementation in the Go Programming Language. Prior to version 4.3.0, a remote Denial of Service (DoS) vulnerability exists in GoBGP where a malformed BGP UPDATE message can trigger a runtime error: index out of range panic. This occurs during the processing of 4-byte AS attributes when the message structure causes an internal slice index shift that is not properly handled. This issue has been patched in version 4.3.0.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
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

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/osrg/gobgp/releases/tag/v4.3.0
Source: security-advisories@github.com
Patch Release Notes
https://github.com/osrg/gobgp/security/advisories/GHSA-8rxh-r2p6-7f2q
Source: security-advisories@github.com
Exploit Vendor Advisory
https://github.com/osrg/gobgp/security/advisories/GHSA-8rxh-r2p6-7f2q
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Exploit Vendor Advisory

3 reference(s) from NVD

Quick Stats

CVSS v3 Score
7.5 / 10.0
EPSS (Exploit Probability)
0.5%
39th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

osrg