TI-2021-19506 Aliases CVE-2021-43667 GHSA-vjj6-5m9f-wqjw

A vulnerability has been detected in HyperLedger Fabric v1.4.0, v2.0.0, v2.1.0.

LOW 36CWE-476Published 2021-11-18 · Updated 2024-08-04

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-476.

Summary

A vulnerability has been detected in HyperLedger Fabric v1.4.0, v2.0.0, v2.1.0. This bug can be leveraged by constructing a message whose payload is nil and sending this message with the method 'forwardToLeader'. This bug has been admitted and fixed by the developers of Fabric. If leveraged, any leader node will crash.

Why it matters now

EPSS 0.01336 71st percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Fixed github.com/hyperledger/fabric (Go): 2.3.3, 2.2.4

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA
—	github.com/hyperledger/fabric (Go)	2.3.0 to before 2.3.3	2.3.3	Patch available	GHSA-vjj6-5m9f-wqjw
—	github.com/hyperledger/fabric (Go)	before 2.2.4	2.2.4	Patch available	GHSA-vjj6-5m9f-wqjw

— Vendor— Affected all versions Fixed in — No fix listed CNA
github.com/hyperledger/fabric (Go) Vendor— Affected 2.3.0 to before 2.3.3 Fixed in 2.3.3 Patch available GHSA-vjj6-5m9f-wqjw
github.com/hyperledger/fabric (Go) Vendor— Affected before 2.2.4 Fixed in 2.2.4 Patch available GHSA-vjj6-5m9f-wqjw

CPE configurations NVD · 3

CPE	Versions	Role	Vendor
cpe:2.3:a:linuxfoundation:fabric:1.4.0:::::::*	1.4.0	Vulnerable	backstage
cpe:2.3:a:linuxfoundation:fabric:2.0.0:::::::*	2.0.0	Vulnerable	backstage
cpe:2.3:a:linuxfoundation:fabric:2.1.0:::::::*	2.1.0	Vulnerable	backstage

cpe:2.3:a:linuxfoundation:fabric:1.4.0:*:*:*:*:*:*:* Versions 1.4.0 Vulnerable ·backstage
cpe:2.3:a:linuxfoundation:fabric:2.0.0:*:*:*:*:*:*:* Versions 2.0.0 Vulnerable ·backstage
cpe:2.3:a:linuxfoundation:fabric:2.1.0:*:*:*:*:*:*:* Versions 2.1.0 Vulnerable ·backstage

Remediation

Fix · GHSA-vjj6-5m9f-wqjw github.com/hyperledger/fabric (Go) Fixed in 2.3.3 Advisory →
Fix · GHSA-vjj6-5m9f-wqjw github.com/hyperledger/fabric (Go) Fixed in 2.2.4 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2021-43667
2026-10-03 Alias added: GHSA-vjj6-5m9f-wqjw

References

TI-2021-19508 A vulnerability has been detected in HyperLedger Fabric v1.4.0, v2.0.0, v2.0.1, v2.3.0. CVSS 3.1HIGH 7.5

Sources

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