CVE-2026-46679

libp2p: Memory DoS via subscription flood of unique topics

Published Jun 10, 2026 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-4f8r-922h-2vgv js-libp2p: Memory DoS via subscription flood of unique topics
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Libp2p
Libp2p libp2p
Vendors & Products Libp2p
Libp2p libp2p
Type Values Removed Values Added
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.
Title libp2p: Memory DoS via subscription flood of unique topics
Weaknesses CWE-20
CWE-400
CWE-401
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Jun 11, 2026, 2:18 PM
Reserved
May 15, 2026, 9:46 PM
Status
Deferred
Published
Jun 10, 2026, 10:17 PM
Modified
Jul 23, 2026, 9:10 AM