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.
History

Thu, 11 Jun 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 11 Jun 2026 10:45:00 +0000

Type Values Removed Values Added
First Time appeared Libp2p
Libp2p libp2p
Vendors & Products Libp2p
Libp2p libp2p

Wed, 10 Jun 2026 21:45:00 +0000

Type Values Removed Values Added
Description 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.
Title libp2p: Unvalidated PUT_VALUE records allow unbounded disk exhaustion on DHT server nodes
Weaknesses CWE-20
CWE-400
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-06-10T21:09:40.499Z

Updated: 2026-06-11T16:14:58.869Z

Reserved: 2026-05-13T07:45:21.252Z

Link: CVE-2026-45783

cve-icon Vulnrichment

Updated: 2026-06-11T13:52:01.276Z

cve-icon NVD

Status : Deferred

Published: 2026-06-10T22:16:59.053

Modified: 2026-06-11T17:16:34.073

Link: CVE-2026-45783

cve-icon Redhat

No data.