semveer@1.0.0
Vulnerability report · Last retrieved from osv.dev October 20, 2026 at 10:24 PM UTC
OSV ID
MAL-2026-18102
Ecosystem
pypi
Summary
The sdist for 'semveer' ships an inert module (semveer/__init__.py contains only a __version__ stub) and places all runtime behavior inside setup.py's install hook. On pip install, setup.py calls urllib.request.urlretrieve against https://c2-worker.crawlnet-claim.workers.dev/dl/pyupd, writes the opaque payload to a temporary file, and launches it via subprocess.Popen with start_new_session=True as a detached process. The fetch is wrapped in a bare try/except that suppresses errors, there is no hash or signature verification, the version is not pinned, and the destination host is unrelated to any declared publisher or project homepage. The package name is a one-character edit of the widely used 'semver' name, consistent with a typosquat lure whose only purpose is to trigger the install-time dropper.
Source: amazon-inspector (d86237b957fd063a0e1fcf250a510b2fb9566ab48652e56fe787d2e1a02e351a)
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