openai-spellchecker

Details

**Severity:** Critical

**Affected versions:** `= 1.0.0`

## Source: kam193 (13911c4c1e0334b4e4d972e3b3256a08f8991d3935d74086c252ed085d3984a0)
The package hides code to download and execute a next-stage payload, which then communicates with C2 and listens for next code parts. In the analyzed version, the malicious code was not triggered.


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


Campaign: 2025-11-spellcheckers


Reasons (based on the campaign):


 - obfuscation


 - 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.

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Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/openai-spellchecker/MAL-2026-3429.json))

**References:**
- https://bad-packages.kam193.eu/pypi/package/openai-spellchecker
- https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/openai-spellchecker/MAL-2026-3429.json
- https://helixguard.ai/blog/malicious-spellcheckers-2025-11-19
- https://www.aikido.dev/blog/malicious-pypi-packages-spellcheckpy-and-spellcheckerpy-deliver-python-rat
- https://github.com/advisories/GHSA-9mgh-842q-hw8m

Compromised versions (1)

• = 1.0.0

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