libp2p: Memory DoS via subscription flood of unique topics
CVE-2026-46679

7.5HIGH

Key Information:

Vendor

Libp2p

Status
Js-libp2p
Vendor
CVE Published:
10 June 2026

What is CVE-2026-46679?

libp2p is a JavaScript Implementation of libp2p networking stack. Prior to version 15.0.23, three cooperating omissions in @libp2p/gossipsub allow an unauthenticated single peer to exhaust the Node.js heap of any gossipsub node with default options. This issue has been patched in version 15.0.23.

Affected Version(s)

js-libp2p < 15.0.23

References

https://github.com/libp2p/js-libp2p/security/advisories/G...
x_refsource_CONFIRM

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.