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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.

PUBLISHED Reserved 2026-03-30 | Published 2026-03-30 | Updated 2026-03-30 | Assigner VulDB




MEDIUM: 6.3CVSS: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
LOW: 3.7CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N/E:X/RL:O/RC:C
LOW: 3.7CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N/E:X/RL:O/RC:C
2.6AV:N/AC:H/Au:N/C:N/I:P/A:N/E:ND/RL:OF/RC:C

Problem types

Improper Access Controls

Incorrect Privilege Assignment

Product status

4.0
affected

4.1
affected

4.2
affected

4.3.0
affected

Timeline

2026-03-30:Advisory disclosed
2026-03-30:VulDB entry created
2026-03-30:VulDB entry last update

Credits

Sunxj (VulDB User) reporter

References

vuldb.com/vuln/354156 (VDB-354156 | osrg GoBGP BGP Header bgp.go BGPHeader.DecodeFromBytes access control) vdb-entry technical-description

vuldb.com/vuln/354156/cti (VDB-354156 | CTI Indicators (IOB, IOC, TTP, IOA)) signature permissions-required

vuldb.com/submit/780189 (Submit #780189 | osrg GoBGP 4.3.0 Improper Input Validation) third-party-advisory

github.com/osrg/gobgp/pull/3340 issue-tracking patch

github.com/...ommit/f0f24a2a901cbf159260698211ab15c583ced131 patch

github.com/osrg/gobgp/ product

cve.org (CVE-2026-5124)

nvd.nist.gov (CVE-2026-5124)

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