zyto (PyPI) · Malicious Code
Affects zytoSource GCVE Database
Malicious package : remove zyto and rotate any secrets on hosts that installed it.
Data as of 4 Nov 2026, 00:45 UTC
Malicious package
Published to PyPI · OSV MAL-2026-18582
What to do
Remove zyto from every project, lockfile and image that pulls it in. Treat any host that installed it as compromised: rotate the credentials, tokens and keys it could read, from a clean machine.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| PyPIzyto | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
Description
The zyto package on PyPI versions 0.2.0 through 0.2.3 contains malicious code that executes during installation by overriding the install command in setup.py. This behavior is intended to prepare for embedding a Remote Access Trojan (RAT), indicating clear malicious intent. The package has been flagged by some antivirus vendors as malicious and is part of a broader campaign identified as 2026-11-filipt.
References
- virustotal.com/gui/file/e5a585e03e1725d5030fd4854805933d53aa86cfbbb0b3808dffcc63782ddf38/detection (opens in a new tab)
- virustotal.com/gui/file/1a89eb45ed45780f16499b0f87ff3dd17db4be0988f7befbfa88224d83fccae2/detection (opens in a new tab)
- tria.ge/261103-xxcp9aez3r (opens in a new tab)
- virustotal.com/gui/file/c8ecde6b3840ab32ceace277f7fd1bfc63eb87344ab9147651e3c4c11dbbac93/detection (opens in a new tab)
- bad-packages.kam193.eu/pypi/package/zyto (opens in a new tab)
- virustotal.com/gui/file/f511eff8b0cec4854856e3686a3eded0decf5fa3b04d585f9f2e951b7d13c295/detection (opens in a new tab)