nagios-xi

Details

**Severity:** Critical

**Affected versions:** `= 19.4.0`

## Source: amazon-inspector (c11c80cc2d314460d61a649c84fd75881388470382be8183b77b362e562a5c7f)
On `import nagios_xi`, the package's `__init__.py` (lines 5-8) invokes `socket.gethostbyname("atlass-check.autaeqjhfowvnnmkwhxjtq8x39d8nder1.oast.fun")` inside a silent try/except. oast.fun is ProjectDiscovery's Interactsh out-of-band callback service; the DNS query itself is the exfiltration channel, confirming code execution on the installer's host and leaking the resolver IP to whoever controls the unique 32-character Interactsh subdomain. The package ships no actual functionality — it impersonates the Nagios XI commercial monitoring product (name `nagios-xi`, version `19.5.0` mimicking real Nagios XI versioning) while declaring an anonymous ProtonMail author (`Coding Team <[email protected]>`), a generic `package utility` description, and an empty README. The combination of brand impersonation, placeholder metadata, and an import-time OAST beacon as the package's sole behavior is reconnaissance for a supply-chain attack against developers searching for Nagios XI integrations.

## Source: kam193 (d8b27c2588accf4f2966f4630a12f9bfdc4ba621403f14237160632447152f23)
Installing the package or importing the module exfiltrates basic information about the host, and the package has no other purpose.


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Category: PROBABLY_PENTEST - Packages looking like typical pentest packages, but also anything that looks like testing, exploring pre-prepared kits, research & co, with clearly low-harm possibilities.


Campaign: GENERIC-standard-pypi-install-pentest


Reasons (based on the campaign):


 - The package contains code to exfiltrate basic data from the system, like IP or username. It has a limited risk.


 - The package overrides the install command in setup.py to execute malicious code during installation.

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Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/nagios-xi/MAL-2026-5698.json))

**References:**
- https://bad-packages.kam193.eu/pypi/package/nagios-xi
- https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/nagios-xi/MAL-2026-5698.json
- https://pypi.org/project/nagios-xi/19.4.0
- https://pypi.org/project/nagios-xi/19.5.0
- https://github.com/advisories/GHSA-6jqp-8563-cvh9

Compromised versions (1)

• = 19.4.0

Any computer that installed or ran a compromised version should be considered fully compromised. Rotate every secret on that machine from a clean environment.