zencleaner

GHSA-4493-p4qp-qw6p

Malicious code in zencleaner (PyPI)

Details

**Severity:** Critical

**Affected versions:** `= 1.0.0`

When a license key is activated or deactivated in the local UI, zencleaner/webhook_logger.py posts the key, the PC name, the Windows user name and the client IP to a hardcoded Discord webhook, although the README says nothing is sent to the internet. 1.0.3 and 1.0.3.1 also look up the public IP through ipify.org and ifconfig.me. Separately, cleaner_system.py clears the Windows event logs, Security included, with wevtutil; a comment in that function reads "so forensic scanners report 0 entries". Nothing runs at install time. I read all three versions and did not run them.

---

Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/efda4b20a168d936ae58b80025aa2cc61c9d03e9/osv/malicious/pypi/zencleaner/MAL-2026-17629.json))

**References:**
- https://github.com/ossf/malicious-packages/blob/efda4b20a168d936ae58b80025aa2cc61c9d03e9/osv/malicious/pypi/zencleaner/MAL-2026-17629.json
- https://github.com/advisories/GHSA-4493-p4qp-qw6p

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.