CVE-2026-5124 | osrg GoBGP up to 4.3.0 BGP Header pkg/packet/bgp/bgp.go BGPHeader.DecodeFromBytes access control (ID 3340)

VDB-354156 · CVE-2026-5124 · ID 3340 OSRG GOBGP UP TO 4.3.0 BGP HEADER PKG/PACKET/BGP/BGP.GO BGPHEADER.DECODEFROMBYTES ACCESS CONTROL HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 3.6 $0-$5k 1.83 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. Productinfo Vendor osrg Name GoBGP Version 4.0 4.1 4.2 4.3.0 License open-source Website Product: https://github.com/osrg/gobgp/ 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 Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock 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: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock 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 Entryinfo Created: 03/30/2026 09:55 Changes: 03/30/2026 09:55 (57) Complete: 🔍 Submitter: Sunxj Cache ID: 99:55B:101 Submitinfo Accepted Submit #780189: osrg GoBGP 4.3.0 Improper Input Validation (by Sunxj) Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸