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TI-2026-30139 Aliases CVE-2026-41586GHSA-prf8-cf2x-rhx7

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

Priority HIGH 81CWE-502Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-502.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.0053 45th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
hyperledgerfabric1.0.0 – 2.2.26—No fix listedCNA
—org.hyperledger.fabric-sdk-java:fabric-sdk-java (Maven)1.0.0 – 2.2.26—No fix listedGHSA-prf8-cf2x-rhx7
  • fabric Vendorhyperledger Affected 1.0.0 – 2.2.26 Fixed in — No fix listed CNA
  • org.hyperledger.fabric-sdk-java:fabric-sdk-java (Maven) Vendor— Affected 1.0.0 – 2.2.26 Fixed in — No fix listed GHSA-prf8-cf2x-rhx7

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:hyperledger:fabric:*:*:*:*:*:*:*:*1.0.0 – 2.2.26Vulnerablehyperledger
  • cpe:2.3:a:hyperledger:fabric:*:*:*:*:*:*:*:* Versions 1.0.0 – 2.2.26 Vulnerable ·hyperledger

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-41586
  2. 2026-10-03 Alias added: GHSA-prf8-cf2x-rhx7

References

Exploit 1

Advisory 1

Other 2

  • TI-2022-13165 Improper Input Validation in fabric hyperledger CVSS 3.1HIGH 7.5
  • TI-2022-22261 Hyperledger Fabric 2.3 allows attackers to cause a denial of service (orderer crash) by… CVSS 3.1HIGH 7.5
  • TI-2022-16448 Remote denial of service in Hyperledger Fabric Gateway CVSS 3.1HIGH 7.0
  • TI-2023-24774 Crosslinking transaction attack in hyperledger/fabric CVSS 3.1HIGH 7.1
  • TI-2024-30320 Hyperledger Fabric through 3.0.0 and 2.5.x through 2.5.9 do not verify that a request has… CVSS 3.1MEDIUM 5.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences