CVE-2026-37462
High
Description
An integer underflow in the BGPUpdate.DecodeFromBytes function (/bgp/bgp.go) of gobgp v4.3.0 allows attackers to cause a Denial of Service (DoS) via supplying a crafted BGP UPDATE message.
SeverityHigh
CVSS7.5
Exploit probability—
ProductGithub.com/osrg/gobgp/v4
PublishedJun 3, 2026
First seenJun 3, 2026
Weakness typeCWE-190Integer overflow
How to fix
Update
- github.com/osrg/gobgp/v44.4.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| github.com/osrg/gobgp/v4Go | v < 4.4.0 | 4.4.0 |
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