PT-2026-36831 · Gobgp · Gobgp

Tomonori Fujita · Published 2026-05-04 · Updated 2026-05-11 · CVE-2026-37461

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 out-of-bounds read in the ParseIP6Extended() function within the '/bgp/bgp.go' file allows attackers to cause a Denial of Service (DoS) by supplying a crafted BGP UPDATE message.

Recommendations As a temporary workaround, consider restricting the processing of BGP UPDATE messages that trigger the ParseIP6Extended() function until a fix is available. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

CVE-2026-37461

GHSA-WMVJ-F67G-QG4G

Affected Products

Gobgp

References · 12

• https://github.com/osrg/gobgp/commit/362cce3e325f56e7a4f792ccb9689b3bdda9e682 · Patch
• https://github.com/osrg/gobgp/commit/9ce8936672ebc07df524da77fa4c6ae26d92be6d · Patch
• https://cve.org/CVERecord?id=CVE-2026-37461 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-37461 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2026-37461 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-37461 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-37461 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-37461 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-wmvj-f67g-qg4g · Vendor Advisory
• https://github.com/osrg/gobgp · Note
• https://github.com/osrg/gobgp/blob/v4.3.0/pkg/packet/bgp/bgp.go · Note
• https://t.me/cveNotify/163091 · Telegram Post