CVE-2022-23486Network attack vector

Peer-node crash via unbounded stream allocations

Published Dec 7, 2022 · Updated Apr 23, 2025

Uncontrolled resource consumption in rust-libp2p before 0.45.1 allows remote attackers to crash peer nodes via stream requests. Stream handling accepts unlimited concurrent streams and buffers partial payloads without sufficient back pressure, multiplying small allocations until memory is exhausted. Any unauthenticated network peer can repeat these actions until the operating system kills the victim process, interrupting the node.

CVSS severity7.5
High
EPSS probability0.69%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Uncontrolled resource consumption in rust-libp2p before 0.45.1 allows remote attackers to crash peer nodes via stream requests. Stream handling accepts unlimited concurrent streams and buffers partial payloads without sufficient back pressure, multiplying small allocations until memory is exhausted. Any unauthenticated network peer can repeat these actions until the operating system kills the victim process, interrupting the node.

The record

CVE
CVE-2022-23486
Published
Dec 7, 2022
Updated
Apr 23, 2025
Vendor
libp2p
Product
rust-libp2p
Classifications
CWE-770, CWE-400, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 7, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 23, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 0.45.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

libp2p · rust-libp2pversion=< 0.45.1

Published CVSS scores

7.5GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5NISTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-770Allocation of Resources Without Limits or Throttling
CWE-400Uncontrolled Resource Consumption
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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