CVE-2026-5122

osrg GoBGP BGP OPEN Message bgp.go DecodeFromBytes access control

LOW
3.7
CVSS Score
Published: March 30, 2026 at 02:15 PM UTC
Updated: June 17, 2026 at 10:58 AM UTC
1 product affected across 1 vendorGoBGP

Using GoBGP by osrg?

Get instant alerts when new vulnerabilities affect GoBGP - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
LOW3.7
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

A security flaw has been discovered in osrg GoBGP up to 4.3.0. This affects the function DecodeFromBytes of the file pkg/packet/bgp/bgp.go of the component BGP OPEN Message Handler. Performing a manipulation of the argument domainNameLen results in improper access controls. The attack may be initiated remotely. A high degree of complexity is needed for the attack. The exploitability is reported as difficult. The patch is named 2b09db390a3d455808363c53e409afe6b1b86d2d. It is suggested to install a patch to address this issue.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 4.4.04.04.14.24.3.0

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (6)

VDB EntryTechnical DescriptionThird Party Advisory
Source: cverecord
https://vuldb.com/vuln/354154
SignaturePermissions RequiredVDB Entry
Source: cverecord
https://vuldb.com/vuln/354154/cti
Third Party AdvisoryVDB Entry
Source: cverecord
https://vuldb.com/submit/780124
Issue TrackingPatch
Source: cverecord
https://github.com/osrg/gobgp/pull/3343
Product
Source: cverecord
https://github.com/osrg/gobgp/

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

3.7LOWVulDB
Vector?

Quick Info

StatusANALYZED
CWE
CWE-284CWE-266

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card