CVE-2026-41586 Details
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.
A remote code execution vulnerability exists in the Hyperledger Fabric SDK for Java, specifically in the channel deserialization process. This issue affects versions 1.0.0 through 2.2.26. The vulnerability arises because the 'Channel.java' file's 'readObject()' method calls 'ObjectInputStream.readObject()' on untrusted byte arrays without proper input filtering. As a result, an attacker can exploit this deserialization flaw to execute arbitrary code. The risk is particularly high in deployments that accept channel data from untrusted sources.
The recommended remediation is to migrate to 'org.hyperledger.fabric:fabric-gateway', which does not use Java serialization and is not vulnerable to this issue.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed May 7, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/hyperledger/fabric/security/advisories/GHSA-prf8-cf2x-rhx7 | CISA-ADP | ExploitMitigationVendor Advisory |
| https://github.com/hyperledger/fabric/security/advisories/GHSA-prf8-cf2x-rhx7 | [email protected] | ExploitMitigationVendor Advisory |
| https://hyperledger.github.io/fabric-gateway | [email protected] | Product |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-502 | Deserialization of Untrusted Data | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| hyperledger fabric | >= 1.0.0, <= 2.2.26 |
CPE
Remediation
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Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Aug 25, 2026 | Initial Analysis | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 7, 2026 | CVE Modified | CISA-ADP |
| May 7, 2026 | New CVE Received | [email protected] |