High severity7.5NVD Advisory· Published Jun 3, 2026· Updated Jul 22, 2026

CVE-2026-37462

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.

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LLM-synthesized narrative grounded in this CVE's description and references.

Affected packages

Versions sourced from the GitHub Security Advisory.

Package	Affected versions	Patched versions
github.com/osrg/gobgp/v4Go	< 4.4.0	4.4.0

Affected products

Osrg/Gobgpllm-fuzzy
Range: =4.3.0
osv-coords
pkg:rpm/opensuse/govulncheck-vulndb&distro=openSUSE%20Leap%2016.0
Range: < 0.0.20260727T201416-160000.1.1

Patches

Vulnerability mechanics

References

github.com/advisories/GHSA-pw7p-7fqv-hpj8ghsaADVISORY
nvd.nist.gov/vuln/detail/CVE-2026-37462ghsaADVISORY
github.com/osrg/gobgp/blob/v4.3.0/pkg/packet/bgp/bgp.gonvdWEB
github.com/osrg/gobgp/commit/9ce8936672ebc07df524da77fa4c6ae26d92be6dnvdWEB

News mentions

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cvss	0.488
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000