osrg GoBGP up to 4.3.0 BGP Header pkg/packet/bgp/bgp.go BGPHeader.DecodeFromBytes access control

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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3.6$0-$5k4.48-

Summaryinfo

A vulnerability described as problematic has been identified in osrg GoBGP up to 4.3.0. Affected by this vulnerability is the function BGPHeader.DecodeFromBytes of the file pkg/packet/bgp/bgp.go of the component BGP Header Handler. The manipulation results in access control. This vulnerability is identified as CVE-2026-5124. The attack can be executed remotely. There is not any exploit available. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability was found in osrg GoBGP up to 4.3.0. It has been classified as problematic. Affected is the function BGPHeader.DecodeFromBytes of the file pkg/packet/bgp/bgp.go of the component BGP Header Handler. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. This is going to have an impact on integrity.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-5124. The exploitability is told to be difficult. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1068.

Applying the patch f0f24a2a901cbf159260698211ab15c583ced131 is able to eliminate this problem. The bugfix is ready for download at github.com.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-17139). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.7
VulDB Meta Temp Score: 3.6

VulDB Base Score: 3.7
VulDB Temp Score: 3.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-284 / CWE-266
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Patch: f0f24a2a901cbf159260698211ab15c583ced131

Timelineinfo

03/30/2026 Advisory disclosed
03/30/2026 +0 days VulDB entry created
03/30/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 3340
Status: Confirmed

CVE: CVE-2026-5124 (🔒)
GCVE (CVE): GCVE-0-2026-5124
GCVE (VulDB): GCVE-100-354156
EUVD: 🔒

Entryinfo

Created: 03/30/2026 09:55
Updated: 03/30/2026 20:18
Changes: 03/30/2026 09:55 (57), 03/30/2026 20:18 (1)
Complete: 🔍
Submitter: Sunxj
Cache ID: 216:655:103

Submitinfo

Accepted

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