CVE-2022-35253 is a high-severity (CVSS 7.5) vulnerability in github.com/hyperledger/fabric. A fix is available for github.com/hyperledger/fabric — see the affected versions and patch details below.
Hyperledger Fabric subject to Denial of Service via non-validated request
Real-World Exposure
github.com/hyperledger/fabricReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Go packages — download data is not available via public APIs for these ecosystems.
Description
A vulnerability exists in Hyperledger Fabric < 2.4 could allow an attacker to construct a non-validated request that could cause a denial of service attack. The peer gateway service tries to extract channel and chaincode information from the signed proposal, but it doesn't check the proposal fields for validity. Therefore a malformed proposal might end up crashing the peer service. This issue has been patched in 2.4.6. There are no known workarounds.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐹Go | github.com/hyperledger/fabric | all versions | 2.4.6go get github.com/hyperledger/fabric@v2.4.6 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for github.com/hyperledger/fabric, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update github.com/hyperledger/fabric to 2.4.6 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2022-35253 is resolved across your whole dependency graph.
Workarounds
Cap what an attacker can consume: apply request size, rate and timeout limits in front of the affected component, and run it with memory and CPU limits so exhaustion degrades one worker rather than the whole service.
Frequently Asked Questions
Is CVE-2022-35253 in your dependencies?
Find it across Go, including transitive dependencies.