CRITICALCVE-2026-41586Published Modified CNA GitHub_M
CVE-2026-41586: ObjectInputStream.readObject() without ObjectInputFilter in fabric-sdk-java allows Java deserialization RCE
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 v4.0
- 9.3
- Severity
- CRITICAL
- Fixed in
- —
- Affected Products
- 1
Affected packages
- hyperledger / fabric>= 1.0.0, <= 2.2.26
CVSS Vector
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