CVE-2026-45783
libp2p: Unvalidated PUT_VALUE records allow unbounded disk exhaustion on DHT server nodes
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-20 CWE-400 |
| Vendor | libp2p |
| Product | js-libp2p |
| Published | Jun 10, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
libp2p / js-libp2p
< 16.2.6