CVE-2026-5122

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.

CVSS v3 3.7 LOW
CVSS v2.0 2.6 LOW

3.7^/10

CVSS v3 : LOW

Vector :

Exploitability : 2.2 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

2.6^/10

CVSS v2.0 : LOW

Vector : AV:N/AC:H/Au:N/C:N/I:P/A:N

Exploitability : 4.9 / Impact : 2.9

Access Vector NETWORK

Access Complexity HIGH

Authentication NONE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
https://github.com/osrg/gobgp/
https://github.com/osrg/gobgp/commit/2b09db390a3d455808363c53e409afe6b1b86d2d
https://github.com/osrg/gobgp/pull/3343
https://vuldb.com/submit/780124
https://vuldb.com/vuln/354154
https://vuldb.com/vuln/354154/cti

Configurations

No configuration.

History

30 Mar 2026, 15:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-03-30 15:16

Updated : 2026-03-30 15:16

NVD link : CVE-2026-5122

Mitre link : CVE-2026-5122

CVE.ORG link : CVE-2026-5122

JSON object : View

Products Affected

No product.

CWE

CWE-266

Incorrect Privilege Assignment

CWE-284

Improper Access Control

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