CVE-2026-41586

CriticalCVSS 9.8/10Last modified Oct 26, 2026

Description

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.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-502

Affected software

Vendor	Product	Versions
hyperledger	fabric	>= 1.0.0, <= 2.2.26

References

https://github.com/hyperledger/fabric/security/advisories/GHSA-prf8-cf2x-rhx7Exploit, Mitigation, Vendor Advisory
https://hyperledger.github.io/fabric-gatewayProduct
https://github.com/hyperledger/fabric/security/advisories/GHSA-prf8-cf2x-rhx7Exploit, Mitigation, Vendor Advisory

Timeline

Published: May 7, 2026
Last modified: Oct 26, 2026
NVD status: Analyzed

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