CVE-2026-41586
CRITICAL WAF: Medium
CVSS 9.8
Published: 2026-05-07
CWE-502
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.
WAF Coverage Analysis
Insecure Deserialization
Medium WAF Coverage
OWASP: A08:2021 Software and Data Integrity Failures
944xxx - Java Attack
Affected Software
| Vendor | Product | Version |
|---|---|---|
| hyperledger | fabric | 1.0.0 - 2.2.26 |
References
- github.com (Exploit, Mitigation, Vendor Advisory)
- hyperledger.github.io (Product)