jsonist

GHSA-pq6f-vg34-p8q5

Malicious code in jsonist (PyPI)

Details

**Severity:** Critical

**Affected versions:** `= 0.1.0`

## Source: kam193 (4c74a199a696dbc18994242bc3c29e9a018ddda51fa2bbe224620d9ded6f1818)
Calling a method starts downloading and starting an infostealer script


---

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


Campaign: 2025-08-secmeasure


Reasons (based on the campaign):


 - action-hidden-in-lib-usage


 - Downloads and executes a remote malicious script.


 - infostealer

---

Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/jsonist/MAL-2025-191767.json))

**References:**
- https://bad-packages.kam193.eu/pypi/package/jsonist
- https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/jsonist/MAL-2025-191767.json
- https://github.com/advisories/GHSA-pq6f-vg34-p8q5

Compromised versions (1)

= 0.1.0

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