CVE-2026-37461
HighSummary
An out-of-bounds read in the ParseIP6Extended function in gobgp v4.3.0 allows attackers to cause a Denial of Service (DoS) by supplying a crafted BGP UPDATE message.
Risk Assessment
This vulnerability may lead to service disruption of BGP, potentially affecting the availability of the organization's network.
Recommendation
It is recommended to update to the latest version of gobgp to mitigate this vulnerability and to monitor BGP traffic for potential attacks.
Other vulnerabilities in gobgp v4.3.0
See all- CVE-2026-42285High
In version 4.4.0 of GoBGP, an unauthenticated remote BGP peer can trigger a fatal panic by sending a specially crafted BGP UPDATE message. This bug causes the entire GoBGP process to crash, resulting in a complete loss of service availability.
- CVE-2026-41643High
GoBGP, an open source implementation of the BGP protocol in Go, prior to version 4.3.0 has a remote Denial of Service (DoS) vulnerability. A malformed BGP UPDATE message can trigger a runtime error related to an index out of range.
- CVE-2026-41642High
In version 4.3.0 of GoBGP, an open source BGP implementation, a remote Denial of Service (DoS) vulnerability exists due to a nil pointer dereference. A malformed BGP UPDATE message containing an unrecognized Path Attribute marked as 'Well-known' leads to a process crash.
- CVE-2026-37462High
An integer underflow in the BGPUpdate.DecodeFromBytes function (/bgp/bgp.go) of gobgp v4.3.0 allows attackers to cause a denial of service by sending a crafted BGP UPDATE message.
Original NVD description (English source)
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.