CVE-2026-5124

LOW

osrg GoBGP BGP Header bgp.go BGPHeader.DecodeFromBytes access control

Title source: cna
STIX 2.1

Description

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.

References (6)

Core 6
Core References
Vdb Entry, Technical Description vdb-entry technical-description
VDB-354156 | osrg GoBGP BGP Header bgp.go BGPHeader.DecodeFromBytes access control
https://vuldb.com/vuln/354156
Signature, Permissions Required signature permissions-required
VDB-354156 | CTI Indicators (IOB, IOC, TTP, IOA)
https://vuldb.com/vuln/354156/cti
Third Party Advisory third-party-advisory
Submit #780189 | osrg GoBGP 4.3.0 Improper Input Validation
https://vuldb.com/submit/780189
Patch issue-tracking patch
https://github.com/osrg/gobgp/pull/3340

Scores

CVSS v3 3.7
EPSS 0.0029
EPSS Percentile 20.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-266 CWE-284
Status published
Products (5)
osrg/gobgp < 4.4.0
osrg/GoBGP 4.0
osrg/GoBGP 4.1
osrg/GoBGP 4.2
osrg/GoBGP 4.3.0
Published Mar 30, 2026
Tracked Since Mar 30, 2026