CVE-2026-46679

High

Description

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.

SeverityHigh

CVSS7.5

Exploit probability—

Product@libp2p/gossipsub

PublishedJun 10, 2026

First seenJun 10, 2026

Weakness typeCWE-20Improper input validation CWE-400Uncontrolled resource consumption CWE-401CWE-401

How to fix

Update

@libp2p/gossipsub15.0.23 or later

Affected products

Product	Affected versions	Fixed in
@libp2p/gossipsubnpm	v < 15.0.23	15.0.23

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