---
id: MAL-2026-18095
title: Malicious code in resion (PyPI)
summary: Malicious code in resion (PyPI)
severity: critical
exploited: true
vendor: resion
product: resion
ecosystem: pip
affected:
  - resion
published: '2026-10-20'
updated: '2026-10-29'
sourceUpdated: '2026-10-29T14:30:45.674381028Z'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/MAL-2026-18095'
references:
  - url: 'https://bad-packages.kam193.eu/pypi/package/resion'
  - url: 'https://pypi.org/project/resion/22.0.1/'
tags:
  - osv
  - pip
  - malware
ingestedAt: '2026-10-21T11:54:42.740Z'
---

## Overview


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

## Source: amazon-inspector (d1b4088658d04bc0725d06a035fa9d83254699e6c26ce3653433199de9b10821)
No a static rule matches were produced for this package version, and no concrete behavioral evidence of credential access, install-time code execution, outbound exfiltration, backdoor, or silent-relay was identified in the available artifacts. The package coordinate (resion 22.0.1 on PyPI) is otherwise unremarkable from the information available; no attacker-controlled destination, no lifecycle hook performing network or filesystem actions outside the package's own directory, and no shipped third-party or author credential has been identified.

## Source: kam193 (2e9e3ce373adb26e45616eec47d727e557f5a696737cb2fbcaa66fb7dc7b7c3e)
Description: In this campaign, the main package (resion) has an embeded pickle disguised as a config. A related dependency (pafex) contains code to load the pickle. During unpickling, malicious code embeded in the pickle file is automatically executed. It then establishes persistence via a PTH file and downloads the next stage payload. During analysis, the final remote payload was just a stub


---

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


Campaign: 2026-10-webreader


Reasons (based on the campaign):


 - files-exfiltration


 - obfuscation


 - The malicious code is intentionally included in a dependency of the package


 - Downloads and executes a remote malicious script.


 - The package contains code to execute remote commands (probably limited to a specific set) on the victim's machine.


 - rat


 - persistence


 - abuses-pth


## Affected packages

- `resion`

## Remediation

Refer to the advisory for the patched release.