GHSA-6wvc-6pww-qr4r — kubeedge
MEDIUMGHSA-6wvc-6pww-qr4r is a medium-severity (CVSS 4.4) Uncontrolled Resource Consumption vulnerability in github.com/kubeedge/kubeedge. A fix is available for github.com/kubeedge/kubeedge — see the affected versions and patch details below.
DoS in KubeEdge's Websocket Client in package Viaduct
Exploitation Status
No confirmed exploitation observed yet
- CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.
Exploitation and automatability from CISA’s SSVC triage for GHSA-6wvc-6pww-qr4r.
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
How urgent is this, really
GHSA-6wvc-6pww-qr4r plotted by exploitation likelihood (EPSS) against impact (CVSS). The shaded corner — EPSS 50%+ and CVSS 7.0+ — is where this CVE doesn't sit, though severity or exploitability alone can still warrant action.
Where this sits among everything scored
Of 379,145 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Real counts from FIRST.org, not a sample — log-scaled since the landscape is heavily right-skewed.
Real-World Exposure
github.com/kubeedge/kubeedge🐹github.com/kubeedge/kubeedge🐹github.com/kubeedge/kubeedgeReal-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
Impact
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. It will be affected If users which are authenticated to the edge side and connect from the edge side to cloudhub through WebSocket protocol.
Patches
This bug has been fixed in Kubeedge 1.11.1, 1.10.2, 1.9.4. Users should update to these versions to resolve the issue.
Workarounds
At the time of writing, no workaround exists.
References
NA
Credits
Thanks David Korczynski and Adam Korczynski of ADA Logics for responsibly disclosing this issue in accordance with the kubeedge security policy during a security audit sponsored by CNCF and facilitated by OSTIF.
For more information
If you have any questions or comments about this advisory:
- Open an issue in KubeEdge repo
- To make a vulnerability report, email your vulnerability to the private [email protected] list with the security details and the details expected for KubeEdge bug reports.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐹Go | github.com/kubeedge/kubeedge | ≥ 1.11.0&&< 1.11.1 | 1.11.1go get github.com/kubeedge/kubeedge@v1.11.1 |
| 🐹Go | github.com/kubeedge/kubeedge | ≥ 1.10.0&&< 1.10.2 | 1.10.2go get github.com/kubeedge/kubeedge@v1.10.2 |
| 🐹Go | github.com/kubeedge/kubeedge | all versions | 1.9.4go get github.com/kubeedge/kubeedge@v1.9.4 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for github.com/kubeedge/kubeedge, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update github.com/kubeedge/kubeedge to 1.11.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-6wvc-6pww-qr4r 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.
How O3 protects you
O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-6wvc-6pww-qr4r can be triaged on real exposure rather than presence alone.
Tailored to GHSA-6wvc-6pww-qr4r. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-6wvc-6pww-qr4r in your dependencies?
O3 Security finds GHSA-6wvc-6pww-qr4r across Go dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.