---
id: MAL-2026-13489
title: Malicious code in pydanticc (PyPI)
summary: Malicious code in pydanticc (PyPI)
severity: none
vendor: pydanticc
product: pydanticc
ecosystem: pip
affected:
  - pydanticc
published: '2026-08-07'
updated: '2026-08-07'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/MAL-2026-13489'
references:
  - url: >-
      https://www.virustotal.com/gui/file/425f5336182e359211b5d751786d2ce1d31a673ea9c82107358a888803742649/detection
  - url: 'https://bad-packages.kam193.eu/pypi/package/pydanticc'
  - url: 'https://tria.ge/260807-fkycrazzg1/behavioral1'
  - url: 'https://pypi.org/project/pydanticc/0.3.0/'
  - url: 'https://pypi.org/project/pydanticc/0.1.2/'
  - url: 'https://pypi.org/project/pydanticc/0.2.0/'
  - url: 'https://pypi.org/project/pydanticc/0.1.1/'
tags:
  - osv
  - pip
ingestedAt: '2026-08-07T19:14:15.198Z'
---

## Overview


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

## Source: amazon-inspector (0bc3a091548db52bab3bf8556e95780b3041aa971b6353d7f31bdb71128915a1)
pydanticc is a typosquat of the popular 'pydantic' package. Its setup.py defines a custom setuptools install command whose body is stored as a base64 string literal and reconstituted at install time via base64.b64decode + compile + exec, concealing the payload from plain reading of setup.py. On Linux, the decoded hook downloads an opaque executable from https://github.com/totti2188/8gp1Q7iZD3h4VW/releases/download/v1.3A/something (a personal GitHub account unrelated to the package's stated purpose), writes it to /tmp/something, marks it executable, and launches it detached via subprocess.Popen with start_new_session=True. The shipped Python module (djangoo/main.py) contains only a trivial hello() print with no pydantic-related functionality, so the package's real effect on installation is arbitrary remote code execution on the installer's host. The unpinned personal-account release URL, base64/exec obfuscation of the URL and Popen call, detached background execution, name-squat of a top-100 package, and stub content together constitute a classic install-time dropper.

## Source: kam193 (c16b176d1ba6ee3f4f1680d0678c9933e620f4de18bec7bc9af67978ed737527)
Package imitates name of a popula library. During installation, obfuscated code downloads a malicious executable and starts it. It then exfiltrates at least cryptocurrency wallet data, probably more.


---

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


Campaign: 2026-08-flasq


Reasons (based on the campaign):


 - typosquatting


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


 - exfiltration-generic


 - Downloads and executes a remote executable.


 - obfuscation


 - exfiltration-crypto


## Affected packages

- `pydanticc`

## Remediation

Refer to the advisory for the patched release.