PT-2026-45955 · Gobgp · Gobgp

Tomonori Fujita · CVE-2026-37462 · Published 2026-06-03 · Updated 2026-07-24

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions gobgp version 4.3.0

Description An integer underflow occurs in the BGPUpdate.DecodeFromBytes() function located in /bgp/bgp.go. This allows attackers to cause a Denial of Service (DoS) by supplying a specially crafted BGP UPDATE message.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Integer Overflow

Weakness Enumeration

CWE-190

Related Identifiers

CVE-2026-37462

GHSA-PW7P-7FQV-HPJ8

GO-2026-5971

Affected Products

Gobgp

References · 14

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/37xxx/CVE-2026-37462.json · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-37462 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-37462 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-37462 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-37462 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2026-37462 · Vendor Advisory
• https://osv.dev/vulnerability/GO-2026-5971 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-37462 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-37462 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-pw7p-7fqv-hpj8 · Vendor Advisory
• https://github.com/osrg/gobgp/commit/9ce8936672ebc07df524da77fa4c6ae26d92be6d · Note
• https://github.com/osrg/gobgp/blob/v4.3.0/pkg/packet/bgp/bgp.go · Note
• https://github.com/osrg/gobgp · Note
• https://github.com/advisories/GHSA-pw7p-7fqv-hpj8 · Note