CVE-2026-37461 Details
Description
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.
A denial-of-service vulnerability has been identified in GoBGP version 4.3.0. The issue arises from an out-of-bounds read in the ParseIP6Extended function within the BGP packet handling code. This vulnerability allows attackers to cause a denial-of-service condition by sending a crafted BGP UPDATE message that exploits the insufficient length validation for IPv6 extended communities. Although the vulnerability was not reachable in practice, it could have led to data corruption by allowing the BGP update message processing to consume data beyond the intended boundaries, potentially causing the application to crash or behave unexpectedly.
Users can upgrade to GoBGP version 4.5.0, where this vulnerability has been addressed, to mitigate the issue.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed May 5, 2026References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-125 | Out-of-bounds Read | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| osrg gobgp | 4.3.0 |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 11, 2026 | Initial Analysis | [email protected] |
| May 5, 2026 | CVE Modified | CISA-ADP |
| May 4, 2026 | New CVE Received | [email protected] |