CVE-2026-49866highCWE-770

CVE-2026-49866: fallo de gravedad alta en libp2p js-libp2p

libp2p: CPU DoS via oversized IHAVE and IWANT control message arrays

Publicada el · Actualizada el

Seguir esta CVE+ Monitorear js-libp2p+ Monitorear @libp2p/gossipsub

Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.

21Vexday Risk Score

Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.

ssvc Trackcvss 7.5epss 0.6%
libp2p is a JavaScript Implementation of libp2p networking stack. Prior to 16.0.0, @libp2p/gossipsub defaultDecodeRpcLimits set maxIhaveMessageIDs and maxIwantMessageIDs to Infinity, allowing oversized IHAVE and IWANT control message arrays in message/decodeRpc.ts and gossipsub.ts to synchronously iterate roughly 180,000 message IDs per 4 MB frame and block the Node.js event loop. This issue is fixed in version 16.0.0.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Productos afectados
libp2p · js-libp2p
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