High severity7.5GHSA Advisory· Published Jun 10, 2026· Updated Jun 11, 2026

CVE-2026-46679

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected packages

Versions sourced from the GitHub Security Advisory.

Package	Affected versions	Patched versions
@libp2p/gossipsubnpm	< 15.0.23	15.0.23

Affected products

Libp2p/Js Libp2pGHSA
Range: <= 15.0.22
ghsa-coords
pkg:npm/%40libp2p/gossipsub
Range: < 15.0.23

Patches

Vulnerability mechanics

References

github.com/advisories/GHSA-4f8r-922h-2vgvghsaADVISORY
nvd.nist.gov/vuln/detail/CVE-2026-46679ghsaADVISORY
github.com/libp2p/js-libp2p/security/advisories/GHSA-4f8r-922h-2vgvnvdWEB

News mentions

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cvss	0.488
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000