CVE-2026-45783 — libp2p: Unvalidated PUT_VALUE records allow unbounded disk exhaustion on DHT server nodes
libp2p is a JavaScript Implementation of libp2p networking stack. Prior to version 16.2.6, an unauthenticated remote peer can exhaust the disk storage of any @libp2p/kad-dht nod…
Published: 2026-06-10 · CVSS: 7.5 · CVSS 3.1
libp2p is a JavaScript Implementation of libp2p networking stack. Prior to version 16.2.6, an unauthenticated remote peer can exhaust the disk storage of any @libp2p/kad-dht node running in server mode by sending an unbounded stream of PUT_VALUE messages whose keys bypass all content validation. No credentials, no prior relationship, and no protocol deviation beyond a crafted key are required. The victim node's datastore fills until the host disk is exhausted, making the node unavailable. This issue has been patched in version 16.2.6.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7