GoBGP is an open source Border Gateway Protocol (BGP) implementation in the Go Programming Language.

Code

The project this record applies to. Exploit listings stay in References.

• Repository · github.com

Timeline

Detection, updates, and resolution for this record.

1. May 7, 2026 · NIST NVD

   Detected

   GoBGP is an open source Border Gateway Protocol (BGP) implementation in the Go Programming Language. In version 4.3.0, a remote Denial of Service (DoS) vulnerability exists in GoBGP due to a nil pointer dereference. When a malformed BGP UPDATE message contains an unrecognized Path Attribute marked as "Well-known," the daemon fails to interrupt the message handling flow. This results in an illegal

2. Jun 17, 2026 · NIST NVD

   Updated

   GoBGP is an open source Border Gateway Protocol (BGP) implementation in the Go Programming Language. In version 4.3.0, a remote Denial of Service (DoS) vulnerability exists in GoBGP due to a nil pointer dereference. When a malformed BGP UPDATE message contains an unrecognized Path Attribute marked as "Well-known," the daemon fails to interrupt the message handling flow. This results in an illegal

Affected

• cpe osrg/gobgp4.3.0

Sources

• CVE.orgVulnerability recordCVE-2026-41642

  Official CVE identifier

  cve.org
• NIST NVDVulnerability recordCVE-2026-41642

  GoBGP is an open source Border Gateway Protocol (BGP) implementation in the Go Programming Language. In version 4.3.0, a remote Denial of Service (DoS) vulnerability exists in GoBGP due to a nil pointer dereference. When a malformed BGP UPDATE message contains an unrecognized Pat

  nvd.nist.gov

References

• Patch · github.com
• Exploit · github.com