{"id":"CVE-2026-37462","aliases":["GHSA-pw7p-7fqv-hpj8","GO-2026-5971"],"url":"https://o3.security/vulnerability/CVE-2026-37462","summary":"GoBGP: Integer underflow in the BGPUpdate.DecodeFromBytes function","details":"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.","published":"2026-06-03T00:00:00Z","modified":"2026-08-12T18:48:09.602267853Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":{"score":0.00279,"percentile":0.20196,"asOf":"2026-08-12"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/osrg/gobgp/v4","fixedVersion":"4.4.0"}],"fix":{"url":"https://github.com/osrg/gobgp/commit/9ce8936672ebc07df524da77fa4c6ae26d92be6d","label":"osrg/gobgp@9ce8936"},"references":[{"type":"WEB","url":"https://github.com/osrg/gobgp/blob/v4.3.0/pkg/packet/bgp/bgp.go"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/37xxx/CVE-2026-37462.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-37462"},{"type":"FIX","url":"https://github.com/osrg/gobgp/commit/9ce8936672ebc07df524da77fa4c6ae26d92be6d"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T18:48:09.602267853Z"}}