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CVE Vulnerability Details :

CVE-2026-41586

PUBLISHED

More Info Official Page

Assigner-GitHub_M

Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa

Published At-07 May, 2026 | 05:12

Updated At-07 May, 2026 | 05:12

▼CVE Numbering Authority (CNA)

ObjectInputStream.readObject() without ObjectInputFilter in fabric-sdk-java allows Java deserialization RCE

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 Products

Vendor

hyperledger

Product

fabric

Versions

Affected

>= 1.0.0, <= 2.2.26

Problem Types

Type	CWE ID	Description
CWE	CWE-502	CWE-502: Deserialization of Untrusted Data

Type: CWE

CWE ID: CWE-502

Description: CWE-502: Deserialization of Untrusted Data

Metrics

Version	Base score	Base severity	Vector
4.0	9.3	CRITICAL	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Version: 4.0

Base score: 9.3

Base severity: CRITICAL

Vector:

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

References

Hyperlink	Resource
https://github.com/hyperledger/fabric/security/advisories/GHSA-prf8-cf2x-rhx7	x_refsource_CONFIRM
https://hyperledger.github.io/fabric-gateway	x_refsource_MISC

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

Resource:

x_refsource_CONFIRM

Hyperlink: https://hyperledger.github.io/fabric-gateway

Resource:

x_refsource_MISC

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