jsonschemex

GHSA-233v-hjmc-c3fw

Malicious code in jsonschemex (PyPI)

Details

**Severity:** Critical

**Affected versions:** `= 0.1.5`

## Source: kam193 (21f678f82847db32c68ab5a95a827f755d13b5d4cd371667eb584f25ed28ed01)
Malicious clone of a legitimate package with hidden code that downloads the next stage scripts.  Analysed payloads had just exfiltrated basic infos


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


Campaign: 2025-11-jsonschemex


Reasons (based on the campaign):


 - exfiltration-generic


 - obfuscation


 - clones-real-package


 - Downloads and executes a remote malicious script.

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Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/jsonschemex/MAL-2025-191769.json))

**References:**
- https://bad-packages.kam193.eu/pypi/package/jsonschemex
- https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/jsonschemex/MAL-2025-191769.json
- https://github.com/advisories/GHSA-233v-hjmc-c3fw

Compromised versions (1)

= 0.1.5

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