---
id: MAL-2026-16346
title: Malicious code in rrs (PyPI)
summary: Malicious code in rrs (PyPI)
severity: critical
exploited: true
vendor: rrs
product: rrs
ecosystem: pip
affected:
  - rrs
published: '2026-09-21'
updated: '2026-09-21'
sourceUpdated: '2026-09-21T09:30:04.955707633Z'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/MAL-2026-16346'
references:
  - url: 'https://pypi.org/project/rrs/0.4.105/'
  - url: 'https://pypi.org/project/rrs/0.3.100/'
  - url: 'https://pypi.org/project/rrs/0.4.106/'
  - url: 'https://pypi.org/project/rrs/0.4.103/'
  - url: 'https://pypi.org/project/rrs/0.4.102/'
  - url: 'https://pypi.org/project/rrs/0.4.104/'
  - url: 'https://pypi.org/project/rrs/0.3.5/'
  - url: 'https://bad-packages.kam193.eu/pypi/package/rrs'
tags:
  - osv
  - pip
  - malware
ingestedAt: '2026-09-21T16:06:16.783Z'
---

## Overview


---
_-= Per source details. Do not edit below this line.=-_

## Source: amazon-inspector (78c488c5d20c788e88c2d4f0a0cb1eb03317bc71edb05964adad62241fd1295e)
On launch of the `rrs` CLI, a background thread captures a full-screen screenshot via `mss` and POSTs the image together with hostname, username, OS/release, local IP, and timestamp to a hardcoded Discord webhook at https://discord.com/api/webhooks/1549807268294303860/... The upload runs unconditionally at startup, with no consent prompt and no user-configurable destination; the webhook is controlled by the package author and is not disclosed as a destination for screen contents. Separately, `Network.start` opens an MQTT connection to the public broker `broker.hivemq.com:1883` and publishes a JSON identity record (id, hostname, username, os) to the shared topic `rrs/v1/presence` every 5 seconds, exposing installer host and user identifiers to any subscriber of that world-readable topic. Screen contents typically include private data, credentials, tokens, and messages visible on the desktop at the moment of capture.

## Source: kam193 (68c88bf30122de71b155310172fb01864659adaf9cc53c576695a82e2ff95d0d)
The package automatically and silently exfiltrates screenshots to a hardcoded location.


---

Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.


Campaign: 2026-09-rrs


Reasons (based on the campaign):


 - spyware-like


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


## Affected packages

- `rrs`

## Remediation

Refer to the advisory for the patched release.