{"id":"UBUNTU-CVE-2026-102930","details":"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.","modified":"2026-10-01T00:21:06.459183898Z","published":"2026-09-29T21:17:00Z","upstream":["CVE-2026-102930"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-102930"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-102930"},{"type":"REPORT","url":"https://github.com/pypa/virtualenv/commit/a01ed3e2f239d6ab1fce62c5c7664ccf268fff6d"},{"type":"REPORT","url":"https://github.com/pypa/virtualenv/pull/3251"},{"type":"REPORT","url":"https://github.com/pypa/virtualenv/security/advisories/GHSA-94p9-xgh2-xp45"}],"affected":[{"package":{"name":"python-virtualenv","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/python-virtualenv?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.10.1-1","1.11-1","1.11-2","1.11.4-1","1.11.4-1ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.11.4-1ubuntu1","binary_name":"python-virtualenv"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-102930.json"}},{"package":{"name":"python-virtualenv","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/python-virtualenv?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.11.6+ds-1","14.0.5+ds-1","14.0.5+ds-2","14.0.5+ds-4","15.0.0+ds-1","15.0.0+ds-2","15.0.1+ds-1","15.0.1+ds-2","15.0.1+ds-3","15.0.1+ds-3ubuntu1","15.0.1+ds-3ubuntu1.1"],"ecosystem_specific":{"binaries":[{"binary_name":"python-virtualenv","binary_version":"15.0.1+ds-3ubuntu1.1"},{"binary_version":"15.0.1+ds-3ubuntu1.1","binary_name":"python3-virtualenv"},{"binary_version":"15.0.1+ds-3ubuntu1.1","binary_name":"virtualenv"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-102930.json"}},{"package":{"name":"python-virtualenv","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/python-virtualenv?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["15.1.0+ds-1","15.1.0+ds-1.1"],"ecosystem_specific":{"binaries":[{"binary_version":"15.1.0+ds-1.1","binary_name":"python-virtualenv"},{"binary_name":"python3-virtualenv","binary_version":"15.1.0+ds-1.1"},{"binary_name":"virtualenv","binary_version":"15.1.0+ds-1.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-102930.json"}},{"package":{"name":"python-virtualenv","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/python-virtualenv?arch=source&distro=esm-apps%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["15.1.0+ds-2","15.1.0+ds-2build1","15.1.0+ds-2ubuntu1","20.0.13-1","20.0.17-1","20.0.17-1ubuntu0.3","20.0.17-1ubuntu0.4","20.0.17-1ubuntu0.4+esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"python3-virtualenv","binary_version":"20.0.17-1ubuntu0.4+esm1"},{"binary_name":"virtualenv","binary_version":"20.0.17-1ubuntu0.4+esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-102930.json"}},{"package":{"name":"python-virtualenv","ecosystem":"Ubuntu:Pro:22.04:LTS","purl":"pkg:deb/ubuntu/python-virtualenv?arch=source&distro=esm-apps%2Fjammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["20.4.6+ds-2","20.10.0+ds-1","20.12.1+ds-1","20.13.0+ds-1","20.13.0+ds-2","20.13.0+ds-2ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_version":"20.13.0+ds-2ubuntu0.1~esm1","binary_name":"python3-virtualenv"},{"binary_version":"20.13.0+ds-2ubuntu0.1~esm1","binary_name":"virtualenv"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-102930.json"}},{"package":{"name":"python-virtualenv","ecosystem":"Ubuntu:Pro:24.04:LTS","purl":"pkg:deb/ubuntu/python-virtualenv?arch=source&distro=esm-apps%2Fnoble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["20.24.1+ds-1","20.24.6+ds-1","20.24.6+ds-2","20.25.0+ds-1","20.25.0+ds-2","20.25.0+ds-2ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"python3-virtualenv","binary_version":"20.25.0+ds-2ubuntu0.1~esm1"},{"binary_name":"virtualenv","binary_version":"20.25.0+ds-2ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-102930.json"}},{"package":{"name":"python-virtualenv","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/python-virtualenv?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["20.31.2+ds-1","20.35.3+ds-1","20.35.4+ds-1","20.36.1+ds-1"],"ecosystem_specific":{"binaries":[{"binary_name":"python3-virtualenv","binary_version":"20.36.1+ds-1"},{"binary_name":"virtualenv","binary_version":"20.36.1+ds-1"}]},"database_specific":{"source":"https://gi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