CVE-2026-37461

FAUCET Score

An out-of-bounds read in the ParseIP6Extended 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.

First published: May 4, 2026Last modified: May 5, 2026

Impacted Technologies

Vendor	Product	Version(s)	CPE
		4.3.0CPE matchmatch criteria	cpe:2.3:a:osrg:gobgp:4.3.0:::::::*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

Exploitability Score

3.9

Impact Score

3.6

CvssVersion

3.1

Exploit Intelligence

EPSS Score

0.34%

Probability of exploitation in next 30 days

EPSS Percentile

25.9%

Percentile rank of EPSS score among Peer Group

As of 2026-07-27

Model: v2026.06.15

This CVE's current EPSS score of 0.0034 is in the 7th percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference

View patch

gopatch availablevia ghsa

Product: github.com/osrg/gobgp/v4Fixed in: 4.4.0

Vendor Advisories (1)

goGHSA-wmvj-f67g-qg4ghigh

GoBGP has an out-of-bounds read in the ParseIP6Extended function

May 4, 2026

References

github.com / osrg/gobgp/blob/v4.3.0/pkg/packet/bgp/bgp.go

Product

github.com / osrg/gobgp/commit/362cce3e325f56e7a4f792ccb9689b3bdda9e682

Patch

github.com / osrg/gobgp/commit/9ce8936672ebc07df524da77fa4c6ae26d92be6d

Patch