{"id":"CVE-2026-102930","published":"2026-09-29T21:17:18.740","lastModified":"2026-09-29T21:17:18.740","description":"virtualenv is a tool for creating isolated virtual python environments. Prior to 21.7.12, download_wheel() accepts pip and setuptools seed wheels fetched for periodic updates or the --download option without checking their bytes against an authoritative digest equivalent to the embedded wheels' BUNDLE_SHA256 verification. A compromised index, stale mirror, or intercepted TLS connection can substitute a different wheel under the requested distribution, version, and filename, after which virtualenv caches and seeds the attacker-controlled wheel into subsequently created environments. The verification applies to the default PyPI path and is intentionally skipped when PIP_INDEX_URL, PIP_EXTRA_INDEX_URL, or PIP_INDEX configures a custom index that may legitimately publish rebuilt wheels. This issue is fixed in version 21.7.12.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":["CWE-494"],"vendors":[],"products":[],"references":[{"url":"https://github.com/pypa/virtualenv/commit/a01ed3e2f239d6ab1fce62c5c7664ccf268fff6d","tags":[]},{"url":"https://github.com/pypa/virtualenv/pull/3251","tags":[]},{"url":"https://github.com/pypa/virtualenv/security/advisories/GHSA-94p9-xgh2-xp45","tags":[]}],"exploitRefs":[{"url":"https://github.com/pypa/virtualenv/commit/a01ed3e2f239d6ab1fce62c5c7664ccf268fff6d","tags":[]},{"url":"https://github.com/pypa/virtualenv/pull/3251","tags":[]},{"url":"https://github.com/pypa/virtualenv/security/advisories/GHSA-94p9-xgh2-xp45","tags":[]}],"hasPoc":true,"ai":null}