CVE-2026-35405: CWE-770: Allocation of Resources Without Limits or Throttling in libp2p rust-libp2p
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.
AI Analysis
Technical Summary
The vulnerability in libp2p-rust (before version 0.17.1) involves the libp2p-rendezvous server accepting unlimited namespace registrations from a single peer without any throttling or resource limits. This flaw (CWE-770) enables a malicious actor to exhaust server memory by continuously registering unique namespaces, potentially causing the server to crash due to OOM. The fix was introduced in version 0.17.1 to impose limits on namespace registrations and prevent resource exhaustion.
Potential Impact
Exploitation of this vulnerability results in denial of service by exhausting server memory resources, causing the libp2p-rendezvous server process to be killed. There is no impact on confidentiality or integrity reported. The vulnerability affects availability of the service.
Mitigation Recommendations
Upgrade libp2p-rust to version 0.17.1 or later, where the vulnerability is fixed by implementing limits on namespace registrations per peer. No other mitigation is indicated or required as the fix is available.
CVE-2026-35405: CWE-770: Allocation of Resources Without Limits or Throttling in libp2p rust-libp2p
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in libp2p-rust (before version 0.17.1) involves the libp2p-rendezvous server accepting unlimited namespace registrations from a single peer without any throttling or resource limits. This flaw (CWE-770) enables a malicious actor to exhaust server memory by continuously registering unique namespaces, potentially causing the server to crash due to OOM. The fix was introduced in version 0.17.1 to impose limits on namespace registrations and prevent resource exhaustion.
Potential Impact
Exploitation of this vulnerability results in denial of service by exhausting server memory resources, causing the libp2p-rendezvous server process to be killed. There is no impact on confidentiality or integrity reported. The vulnerability affects availability of the service.
Mitigation Recommendations
Upgrade libp2p-rust to version 0.17.1 or later, where the vulnerability is fixed by implementing limits on namespace registrations per peer. No other mitigation is indicated or required as the fix is available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-04-02T17:03:42.075Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69d51c3baaed68159a2c14ef
Added to database: 4/7/2026, 3:01:15 PM
Last enriched: 4/15/2026, 12:23:12 PM
Last updated: 5/21/2026, 9:51:20 PM
Views: 74
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