CVE-2026-37461

Publication date 4 May 2026

Last updated 6 June 2026

Ubuntu priority

Cvss 3 Severity Score

Description

An out-of-bounds read in the ParseIP6Extended function (/bgp/bgp.go) of gobgp v4.3.0 allows attackers to cause a Denial of Service (DoS) via supplying a crafted BGP UPDATE message.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
gobgp	26.04 LTS resolute	Fixed 3.36.0-2ubuntu0.1~esm1
	25.10 questing	Vulnerable
	24.04 LTS noble	Fixed 3.23.0-1ubuntu0.3+esm4
	22.04 LTS jammy	Fixed 2.25.0-3ubuntu0.1+esm4
	20.04 LTS focal	Fixed 2.12.0-1ubuntu0.1~esm3
	18.04 LTS bionic	Fixed 1.29-1ubuntu0.1+esm2

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Severity score breakdown

Parameter	Value
Base score	7.5 · High
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

USN-8348-1
GoBGP vulnerabilities
3 June 2026