nebulallm

GHSA-mvgr-2gjf-h99c

Malicious code in nebulallm (PyPI)

Details

**Severity:** Critical

**Affected versions:** `= 1.4.3`

## Source: kam193 (50e0ed125f08fd7743ccfb40590c24304b4731f6a99b69bc553b5bb8b7e57fc6)
During installation package first downloads a JScript script, which then downloads the next malicious DLL.


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


Campaign: 2026-10-nebulallm


Reasons (based on the campaign):


 - typosquatting


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


 - Downloads and executes a remote executable.


 - Downloads and executes a remote malicious script.


 - malware

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Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/f00010524fbee80b36d5630049886d5cf2a13a98/osv/malicious/pypi/nebulallm/MAL-2026-18297.json))

**References:**
- https://bad-packages.kam193.eu/pypi/package/nebulallm
- https://github.com/ossf/malicious-packages/blob/f00010524fbee80b36d5630049886d5cf2a13a98/osv/malicious/pypi/nebulallm/MAL-2026-18297.json
- https://tria.ge/261025-yy5yvshy4v
- https://www.virustotal.com/gui/file/ccdd8b191818222bfbbe20816d7448b0f42745924e122849b2e06c3511a76c7d/detection
- https://github.com/ossf/malicious-packages/blob/4f27542fecd13e7f077489c04a2f3503d1189f32/osv/malicious/pypi/nebulallm/MAL-2026-18297.json
- https://pypi.org/project/nebulallm/1.4.3
- https://github.com/advisories/GHSA-mvgr-2gjf-h99c

Compromised versions (1)

= 1.4.3

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