CVE-2026-5122
Low
Description
A security flaw has been discovered in osrg GoBGP up to 4.3.0. This affects the function DecodeFromBytes of the file pkg/packet/bgp/bgp.go of the component BGP OPEN Message Handler. Performing a manipulation of the argument domainNameLen results in improper access controls. The attack may be initiated remotely. A high degree of complexity is needed for the attack. The exploitability is reported as difficult. The patch is named 2b09db390a3d455808363c53e409afe6b1b86d2d. It is suggested to install a patch to address this issue.
SeverityLow
CVSS3.7
Exploit probability—
ProductOsrg Gobgp
PublishedMar 30, 2026
First seenMar 30, 2026
Weakness typeCWE-284Improper access controlCWE-266CWE-266
How to fix
Update
- osrg gobgp4.4.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| osrg gobgp | v < 4.4.0 | 4.4.0 |
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