syntaxlogger

GHSA-gj7w-2v6v-wr99

Malicious code in syntaxlogger (PyPI)

Details

**Severity:** Critical

**Affected versions:** `= 0.1.0`

## Source: kam193 (ebc8a65895fc09c10b6e6bf23926076ec575582e80e084616e6779b091df947d)
When using the provided functionality, code silently downloads archives with executables to a location excluded from A scanning, and then executes them. The remote content appears to be a legitimate application manipulated via DLL poisoning to perform malicious actions.


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


Campaign: 2026-05-syntaxlogger


Reasons (based on the campaign):


 - Downloads and executes a remote executable.


 - action-hidden-in-lib-usage


 - malware

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Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/syntaxlogger/MAL-2026-3697.json))

**References:**
- https://bad-packages.kam193.eu/pypi/package/syntaxlogger
- https://github.com/ossf/malicious-packages/blob/49d0cfba3689ed9b195d101d3a2a964c6a77f767/osv/malicious/pypi/syntaxlogger/MAL-2026-3697.json
- https://www.virustotal.com/gui/file/01a722d6122ca15501db6e6c6cddcfb462ec7bc5161ebd482e38b32e283288f4/summary
- https://github.com/advisories/GHSA-gj7w-2v6v-wr99

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.