CVE-2026-41586: CWE-502: Deserialization of Untrusted Data in hyperledger fabric
CVE-2026-41586 is a critical vulnerability in Hyperledger Fabric versions 1. 0. 0 through 2. 2. 26 involving unsafe deserialization of untrusted data. The vulnerability arises because Channel. java calls ObjectInputStream. readObject() on untrusted byte arrays without applying an ObjectInputFilter, a known Java deserialization risk. This flaw can lead to remote code execution if exploited. As of the publication date, no patches or official fixes are available.
AI Analysis
Technical Summary
Hyperledger Fabric, an enterprise permissioned blockchain framework, contains a deserialization vulnerability (CWE-502) in Channel.java from versions 1.0.0 to 2.2.26. The methods readObject() and deSerializeChannel() invoke Java's ObjectInputStream.readObject() on untrusted byte arrays without configuring an ObjectInputFilter, allowing potential remote code execution through malicious serialized input. This vulnerability has a CVSS 4.0 base score of 9.3, indicating critical severity. No official remediation or patches are currently available, and the product is not a cloud service, so remediation depends on vendor patch releases.
Potential Impact
Successful exploitation of this vulnerability could allow an unauthenticated attacker to execute arbitrary code remotely on affected Hyperledger Fabric nodes by sending crafted serialized data. This could compromise the integrity and availability of the blockchain network and its applications. The CVSS score of 9.3 reflects high impact on confidentiality, integrity, and availability. There are no known public exploits at this time.
Mitigation Recommendations
No official patches or fixes are currently available for this vulnerability. Users should avoid processing untrusted serialized data with affected versions of Hyperledger Fabric. Monitor the vendor's advisories for updates and apply patches promptly once released. Since this is not a cloud service, remediation depends on applying vendor patches when they become available. Until then, restricting access to trusted sources and minimizing exposure of vulnerable components is recommended.
CVE-2026-41586: CWE-502: Deserialization of Untrusted Data in hyperledger fabric
Description
CVE-2026-41586 is a critical vulnerability in Hyperledger Fabric versions 1. 0. 0 through 2. 2. 26 involving unsafe deserialization of untrusted data. The vulnerability arises because Channel. java calls ObjectInputStream. readObject() on untrusted byte arrays without applying an ObjectInputFilter, a known Java deserialization risk. This flaw can lead to remote code execution if exploited. As of the publication date, no patches or official fixes are available.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Hyperledger Fabric, an enterprise permissioned blockchain framework, contains a deserialization vulnerability (CWE-502) in Channel.java from versions 1.0.0 to 2.2.26. The methods readObject() and deSerializeChannel() invoke Java's ObjectInputStream.readObject() on untrusted byte arrays without configuring an ObjectInputFilter, allowing potential remote code execution through malicious serialized input. This vulnerability has a CVSS 4.0 base score of 9.3, indicating critical severity. No official remediation or patches are currently available, and the product is not a cloud service, so remediation depends on vendor patch releases.
Potential Impact
Successful exploitation of this vulnerability could allow an unauthenticated attacker to execute arbitrary code remotely on affected Hyperledger Fabric nodes by sending crafted serialized data. This could compromise the integrity and availability of the blockchain network and its applications. The CVSS score of 9.3 reflects high impact on confidentiality, integrity, and availability. There are no known public exploits at this time.
Mitigation Recommendations
No official patches or fixes are currently available for this vulnerability. Users should avoid processing untrusted serialized data with affected versions of Hyperledger Fabric. Monitor the vendor's advisories for updates and apply patches promptly once released. Since this is not a cloud service, remediation depends on applying vendor patches when they become available. Until then, restricting access to trusted sources and minimizing exposure of vulnerable components is recommended.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-04-21T14:15:21.959Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69fc24d8cbff5d86109abcb9
Added to database: 5/7/2026, 5:36:24 AM
Last enriched: 5/7/2026, 5:51:51 AM
Last updated: 5/7/2026, 7:53:13 AM
Views: 15
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