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CVE-2026-41586— ObjectInputStream.readObject() without ObjectInputFilter in fabric-sdk-java allows Java deserialization RCE

Quick assessment

Affected
hyperledger fabric
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Hyperledger Fabric是Hyperledger开源的一个企业级许可的分布式账本框架。用于开发解决方案和应用程序。 Hyperledger Fabric 1.0.0至2.2.26版本存在代码问题漏洞，该漏洞源于Channel.java的deSerializeChannel方法在反序列化未受信任的字节数组时未配置ObjectInputFilter，可能导致远程代码执行。

AI Predicted 9.8 Difficulty: Easy EPSS 0.63% · P48

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
hyperledger fabric >= 1.0.0, <= 2.2.26 affected
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I. Basic Information for CVE-2026-41586

Vulnerability Information
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Vulnerability Title
ObjectInputStream.readObject() without ObjectInputFilter in fabric-sdk-java allows Java deserialization RCE
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
可信数据的反序列化
Source: CVE Program / CVE List V5
Vulnerability Title
Hyperledger Fabric 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Hyperledger Fabric是Hyperledger开源的一个企业级许可的分布式账本框架。用于开发解决方案和应用程序。 Hyperledger Fabric 1.0.0至2.2.26版本存在代码问题漏洞，该漏洞源于Channel.java的deSerializeChannel方法在反序列化未受信任的字节数组时未配置ObjectInputFilter，可能导致远程代码执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
hyperledger fabric >= 1.0.0, <= 2.2.26 -

II. Public POCs for CVE-2026-41586

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III. Intelligence Information for CVE-2026-41586

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Vendor Advisories for CVE-2026-41586 (1)

Security Blog Posts for CVE-2026-41586 (1)

IV. Related Vulnerabilities

Same product: fabric
Same vendor: hyperledger
Same weakness: CWE-502

V. Comments for CVE-2026-41586

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