libp2p rust-libp2p up to 0.17.0 libp2p-rendezvous Server allocation of resources

Summaryinfo

A vulnerability labeled as problematic has been found in libp2p rust-libp2p up to 0.17.0. Impacted is an unknown function of the component libp2p-rendezvous Server. Such manipulation leads to allocation of resources. This vulnerability is listed as CVE-2026-35405. The attack may be performed from remote. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in libp2p rust-libp2p up to 0.17.0. It has been rated as problematic. Affected by this issue is an unknown part of the component libp2p-rendezvous Server. The manipulation with an unknown input leads to a allocation of resources vulnerability. Using CWE to declare the problem leads to CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor. Impacted is availability. CVE summarizes:

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.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-35405 since 04/02/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

Upgrading to version 0.17.1 eliminates this vulnerability.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

• libp2p

Name

• rust-libp2p

Version

• 0.1
• 0.2
• 0.3
• 0.4
• 0.5
• 0.6
• 0.7
• 0.8
• 0.9
• 0.10
• 0.11
• 0.12
• 0.13
• 0.14
• 0.15
• 0.16
• 0.17.0

Website

• Product: https://github.com/libp2p/rust-libp2p/

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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