Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-35405— libp2p-rendezvous: Unlimited namespace registrations per peer enables OOM DoS on rendezvous servers

Quick assessment

Affected
libp2p rust-libp2p
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

rust-libp2p是libp2p开源的一种 libp2p 网络堆栈的 Rust 实现。 rust-libp2p 0.17.1之前版本存在安全漏洞，该漏洞源于rendezvous服务器对单个对等体可注册的命名空间数量无限制，可能导致内存耗尽和拒绝服务攻击。

CVSS 7.5 · High EPSS 0.49% · P40

Possible ATT&CK Techniques 1 AI

T1498 · Network Denial of Service
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-35405

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
libp2p-rendezvous: Unlimited namespace registrations per peer enables OOM DoS on rendezvous servers
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
Source: CVE Program / CVE List V5
Vulnerability Title
rust-libp2p 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
rust-libp2p是libp2p开源的一种 libp2p 网络堆栈的 Rust 实现。 rust-libp2p 0.17.1之前版本存在安全漏洞，该漏洞源于rendezvous服务器对单个对等体可注册的命名空间数量无限制，可能导致内存耗尽和拒绝服务攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
libp2p rust-libp2p < 0.17.1 -

II. Public POCs for CVE-2026-35405

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-35405

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-35405 (1)

IV. Related Vulnerabilities

Same product: rust-libp2p
Same vendor: libp2p
Same weakness: CWE-770

V. Comments for CVE-2026-35405

No comments yet

Leave a comment