CVE-2022-36023Network attack vector

Peer crash via unchecked nested proposal fields

Published Aug 18, 2022 · Updated Apr 23, 2025

Improper input validation in Hyperledger Fabric 2.4.0 through 2.4.5 allows remote attackers to crash a Gateway peer with a malformed request. Gateway proposal parsing dereferences nested ChaincodeSpec and ChaincodeId fields without confirming they exist after protobuf unmarshalling. A client able to reach the peer's Gateway service can interrupt that peer process; no user interaction or prior authentication is required.

CVSS severity7.0
High
EPSS probability1.10%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Improper input validation in Hyperledger Fabric 2.4.0 through 2.4.5 allows remote attackers to crash a Gateway peer with a malformed request. Gateway proposal parsing dereferences nested ChaincodeSpec and ChaincodeId fields without confirming they exist after protobuf unmarshalling. A client able to reach the peer's Gateway service can interrupt that peer process; no user interaction or prior authentication is required.

The record

CVE
CVE-2022-36023
Published
Aug 18, 2022
Updated
Apr 23, 2025
Vendor
Hyperledger Foundation
Product
Hyperledger Fabric
Classifications
CWE-20, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 18, 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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=< 2.4.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Hyperledger Foundation · Hyperledger Fabricversion=< 2.4.6

Published CVSS scores

5.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
7.0GitHub, Inc.CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/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-20Improper Input Validation
T1499.004Application or System Exploitation

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo