CVE-2026-46679: LIBP2P Js-LIBP2P

High severity, CVSS 7.5. EPSS: 0.5% chance of exploitation in the next 30 days.

libp2p is a JavaScript Implementation of libp2p networking stack. Prior to version 15.0.23, three cooperating omissions in @libp2p/gossipsub allow an unauthenticated single peer to exhaust the Node.js heap of any gossipsub node with default options. This issue has been patched in version 15.0.23.

Affected products

• LIBP2P Js-LIBP2P: before 15.0.23 (fixed in 15.0.23)

Published 2026-06-10. Last modified 2026-07-23.