CVE-2026-5124
osrg GoBGP BGP Header bgp.go BGPHeader.DecodeFromBytes access control
- State
- Published
- Severity
- 6.3 Medium
- Published
- Mar 30, 2026
- Updated
- Mar 30, 2026
- Reserved
- Mar 30, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.3 Medium | CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X | VulDB |
| 3.1 | 3.7 Low | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N/E:X/RL:O/RC:C | VulDB |
| 3.0 | 3.7 Low | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N/E:X/RL:O/RC:C | VulDB |
| 2.0 | 2.6 Low | AV:N/AC:H/Au:N/C:N/I:P/A:N/E:ND/RL:OF/RC:C | VulDB |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
GoBGPosrg |
|
References
- VDB-354156 | osrg GoBGP BGP Header bgp.go BGPHeader.DecodeFromBytes access controlvdb-entrytechnical-description
- VDB-354156 | CTI Indicators (IOB, IOC, TTP, IOA)signaturepermissions-required
- Submit #780189 | osrg GoBGP 4.3.0 Improper Input Validationthird-party-advisory
- https://github.com/osrg/gobgp/pull/3340issue-trackingpatch
- https://github.com/osrg/gobgp/commit/f0f24a2a901cbf159260698211ab15c583ced131patch
- https://github.com/osrg/gobgp/product
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