---
id: CVE-2026-41586
title: >-
  Hyperledger Fabric is an enterprise-grade permissioned distributed ledger
  framework for developing solutions and applications
summary: >-
  Hyperledger Fabric is an enterprise-grade permissioned distributed ledger
  framework for developing solutions and applications. From versions 1.0.0 to
  2.2.26, Channel.java implements readObject() and exposes deSerializeChannel()
  which cal…
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-502
vendor: hyperledger
product: fabric
affected:
  - 'fabric >= 1.0.0, <= 2.2.26'
published: '2026-05-07'
updated: '2026-08-25'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-41586'
references:
  - url: >-
      https://github.com/hyperledger/fabric/security/advisories/GHSA-prf8-cf2x-rhx7
    label: security-advisories@github.com
  - url: 'https://hyperledger.github.io/fabric-gateway'
    label: security-advisories@github.com
  - url: >-
      https://github.com/hyperledger/fabric/security/advisories/GHSA-prf8-cf2x-rhx7
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
epss: 0.0053
epssPercentile: 0.43794
ingestedAt: '2026-08-26T13:44:27.279Z'
---

## Overview

Hyperledger Fabric is an enterprise-grade permissioned distributed ledger framework for developing solutions and applications. From versions 1.0.0 to 2.2.26, Channel.java implements readObject() and exposes deSerializeChannel() which call ObjectInputStream.readObject() on untrusted byte arrays without configuring an ObjectInputFilter. This is a classic Java deserialization RCE pattern. At time of publication, there are no publicly available patches.

## Affected

- `fabric >= 1.0.0, <= 2.2.26`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.