CVE-2026-45783
libp2p: Unvalidated PUT_VALUE records allow unbounded disk exhaustion on DHT server nodes
HIGH 7.5EPSS 0.5%
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.
- Affected
- libp2p · js-libp2p
- CVSS v3.1 GITHUB
- 7.5 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - EPSS
- 0.50% chance of exploitation in the next 30 days, 42nd percentile
- Published
- 2026-06-10
- Updated
- 2026-06-11