What is CVE-2026-45783?

CVE-2026-45783 is a high-severity vulnerability in Libp2p Js-libp2p, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2026-06-10.

How severe is CVE-2026-45783?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in Libp2p Js-libp2p

CVE-2026-45783

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…

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.004 (28.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Libp2p Js-libp2p — versions < 16.2.6

Weakness classification (CWE)

CWE-20 — Improper Input Validation
CWE-400 — Uncontrolled Resource Consumption

References

security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-45783?: CVE-2026-45783 is a high-severity vulnerability in Libp2p Js-libp2p, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2026-06-10.
How severe is CVE-2026-45783?: High severity. CVSS v3 base score is 7.5 out of 10.