CVE-2026-46679: high-severity vulnerability in libp2p js-libp2p
libp2p: Memory DoS via subscription flood of unique topics
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.5epss 0.3%
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
libp2p · js-libp2pRelated CVEs — libp2p js-libp2p
In the same product, most dangerous first.
CVE-2022-23487HIGHlibp2p denial of service vulnerability from lack of resource managementEPSS 0.7%CVE-2026-86040HIGHlibp2p: Unbounded RPC decode + synchronous subscription processing in @libp2p/floodsub allows unauthenticated DoSEPSS 0.7%CVE-2026-49866HIGHlibp2p: CPU DoS via oversized IHAVE and IWANT control message arraysEPSS 0.6%CVE-2026-77384HIGHlibp2p: Circuit relay v2 server reservation refresh leaks abort listeners and allows remote resource exhaustionEPSS 0.6%CVE-2026-103936HIGHlibp2p: Single pre-auth STUN packet terminates `@libp2p/webrtc` WebRTC-direct Node.js listenersEPSS 0.5%CVE-2026-45783HIGHlibp2p: Unvalidated PUT_VALUE records allow unbounded disk exhaustion on DHT server nodesEPSS 0.4%