Osrg · Gobgp · CVE-2026-5122
**Name of the Vulnerable Software and Affected Versions**
osrg GoBGP versions through 4.3.0
**Description**
A security issue exists in osrg GoBGP up to version 4.3.0. The issue resides in the `DecodeFromBytes` function within the `pkg/packet/bgp/bgp.go` file, specifically in the BGP OPEN Message Handler component. Manipulation of the `domainNameLen` argument can lead to improper access controls. The attack can be initiated remotely and requires a high degree of complexity, with exploitability reported as difficult.
**Recommendations**
Install the patch 2b09db390a3d455808363c53e409afe6b1b86d2d to address this issue.