CVE-2026-41643

Published: May 7, 2026Modified: Jun 17, 2026

7.5

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitability: 3.9 / Impact: 3.6

Source: security-advisories@github.com (Secondary)

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.

Affected (1)

Products: Osrg: Gobgp

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Osrg Gobgp	Before 4.3.0

Related CWEs

Improper Validation of Array Index

The product uses untrusted input when calculating or using an array index, but the product does not validate or incorrectly validates the index to ensure the index references a valid position within the array.

References (3)

https://github.com/osrg/gobgp/releases/tag/v4.3.0

Source: security-advisories@github.com

PatchRelease Notes

https://github.com/osrg/gobgp/security/advisories/GHSA-8rxh-r2p6-7f2q

Source: security-advisories@github.com

ExploitVendor Advisory

https://github.com/osrg/gobgp/security/advisories/GHSA-8rxh-r2p6-7f2q

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

ExploitVendor Advisory

Timeline

No history available yet.