High severity7.5GHSA Advisory· Published Jun 10, 2026· Updated Jun 11, 2026
CVE-2026-45783
CVE-2026-45783
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.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
@libp2p/kad-dhtnpm | < 16.2.6 | 16.2.6 |
Affected products
2Patches
Vulnerability mechanics
References
3News mentions
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