CVE-2026-5124 MEDIUM

CVE-2026-5124: osrg GoBGP BGP Header bgp.go BGPHeader.DecodeFromBytes access control

Vendor Osrg
Product GoBGP
Weakness CWE-284
Published March 30, 2026
Last update March 30, 2026

CVSS base score

6.3/10
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X

What the vulnerability does

01Description

A security vulnerability has been detected in osrg GoBGP up to 4.3.0. Affected is the function BGPHeader.DecodeFromBytes of the file pkg/packet/bgp/bgp.go of the component BGP Header Handler. The manipulation leads to improper access controls. Remote exploitation of the attack is possible. The attack is considered to have high complexity. The exploitability is told to be difficult. The identifier of the patch is f0f24a2a901cbf159260698211ab15c583ced131. To fix this issue, it is recommended to deploy a patch.

Key dates

02Disclosure timeline

March 30, 2026 CVE published
March 30, 2026 Record updated