dmclc

GHSA-jrjj-hcjq-wggm

Malicious code in dmclc (PyPI)

Details

**Severity:** Critical

**Affected versions:** `= 2.1.0`

## Source: kam193 (895439e6afba407fb85d315e2c99f0d1434905a1ee72b172e62d55abbb8c93a3)
During installation, the package starts obfuscated code that downloads and runs remote executables in specific environments - in older packages - attempts to exfiltrate some basic information using DNS requests and then likely cover tracks by installing a similarly named package from private repository


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


Campaign: 2026-02-urllib-slim


Reasons (based on the campaign):


 - typosquatting


 - Downloads and executes a remote executable.


 - obfuscation


 - dependency-confusion

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Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/dmclc/MAL-2026-2106.json))

**References:**
- https://bad-packages.kam193.eu/pypi/package/dmclc
- https://github.com/GCLNS
- https://github.com/geekennedy
- https://github.com/loudpage5125
- https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/dmclc/MAL-2026-2106.json
- https://www.virustotal.com/gui/file/d6029cce705b3842042106efb737c8b14eb736fdbfb8d0d03c3dfbc8d6c207a5?nocache=1
- https://github.com/advisories/GHSA-jrjj-hcjq-wggm

Compromised versions (1)

= 2.1.0

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