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    CVE-2026-41586

    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.

    Published:May 7, 2026
    Last Modified:Aug 25, 2026
    EPS:May 7, 2026
    EPSS Score:0.0041
    CVSS Score:9.8

    Affected Products

    Vendor
    Hyperledger
    Product
    Fabric

    Exploits

    https://github.com/hyperledger/fabric/security/advisories/GHSA-prf8-cf2x-rhx7https://github.com/hyperledger/fabric/security/advisories/GHSA-prf8-cf2x-rhx7

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-586 Object Injection

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High