libp2p-rust is the official rust language Implementation of the libp2p networking stack. Prior to 0.17.1, libp2p-rendezvous server has no limit on how many namespaces a single peer can register. A malicious peer can just keep registering unique namespaces in a loop and the server happily accepts every single one allocating memory for each registration with no pushback. Keep doing this long enough (or with multiple sybil peers) and the server process gets OOM killed. This vulnerability is fixed in 0.17.1.
History

Thu, 09 Apr 2026 19:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 09 Apr 2026 08:30:00 +0000

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

Tue, 07 Apr 2026 15:15:00 +0000

Type Values Removed Values Added
Description libp2p-rust is the official rust language Implementation of the libp2p networking stack. Prior to 0.17.1, libp2p-rendezvous server has no limit on how many namespaces a single peer can register. A malicious peer can just keep registering unique namespaces in a loop and the server happily accepts every single one allocating memory for each registration with no pushback. Keep doing this long enough (or with multiple sybil peers) and the server process gets OOM killed. This vulnerability is fixed in 0.17.1.
Title libp2p-rendezvous: Unlimited namespace registrations per peer enables OOM DoS on rendezvous servers
Weaknesses CWE-770
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: 2026-04-07T14:21:15.377Z

Updated: 2026-04-09T17:44:08.836Z

Reserved: 2026-04-02T17:03:42.075Z

Link: CVE-2026-35405

cve-icon Vulnrichment

Updated: 2026-04-09T17:43:54.490Z

cve-icon NVD

Status : Undergoing Analysis

Published: 2026-04-07T15:17:43.367

Modified: 2026-04-09T18:17:01.273

Link: CVE-2026-35405

cve-icon Redhat

No data.