{"id":"UBUNTU-CVE-2026-22702","details":"virtualenv is a tool for creating isolated virtual python environments. Prior to version 20.36.1, TOCTOU (Time-of-Check-Time-of-Use) vulnerabilities in virtualenv allow local attackers to perform symlink-based attacks on directory creation operations. An attacker with local access can exploit a race condition between directory existence checks and creation to redirect virtualenv's app_data and lock file operations to attacker-controlled locations. This issue has been patched in version 20.36.1.","modified":"2026-01-20T16:50:48.194610Z","published":"2026-01-10T07:16:00Z","upstream":["CVE-2026-22702"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-22702"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-22702"},{"type":"REPORT","url":"https://github.com/pypa/virtualenv/security/advisories/GHSA-597g-3phw-6986"},{"type":"REPORT","url":"https://github.com/pypa/virtualenv/pull/3013"},{"type":"REPORT","url":"https://github.com/pypa/virtualenv/commit/dec4cec5d16edaf83a00a658f32d1e032661cebc"}],"affected":[{"package":{"name":"python-virtualenv","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/python-virtualenv@1.11.4-1ubuntu1?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-2026-22702.json"}},{"package":{"name":"python-virtualenv","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/python-virtualenv@15.0.1+ds-3ubuntu1.1?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_version":"15.0.1+ds-3ubuntu1.1","binary_name":"python-virtualenv"},{"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-2026-22702.json"}},{"package":{"name":"python-virtualenv","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/python-virtualenv@15.1.0+ds-1.1?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_version":"15.1.0+ds-1.1","binary_name":"python3-virtualenv"},{"binary_version":"15.1.0+ds-1.1","binary_name":"virtualenv"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-22702.json"}},{"package":{"name":"python-virtualenv","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/python-virtualenv@20.0.17-1ubuntu0.4+esm1?arch=source&distro=esm-apps/focal"},"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_version":"20.0.17-1ubuntu0.4+esm1","binary_name":"python3-virtualenv"},{"binary_version":"20.0.17-1ubuntu0.4+esm1","binary_name":"virtualenv"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-22702.json"}},{"package":{"name":"python-virtualenv","ecosystem":"Ubuntu:Pro:22.04:LTS","purl":"pkg:deb/ubuntu/python-virtualenv@20.13.0+ds-2ubuntu0.1~esm1?arch=source&distro=esm-apps/jammy"},"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-2026-22702.json"}},{"package":{"name":"python-virtualenv","ecosystem":"Ubuntu:Pro:24.04:LTS","purl":"pkg:deb/ubuntu/python-virtualenv@20.25.0+ds-2ubuntu0.1~esm1?arch=source&distro=esm-apps/noble"},"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_version":"20.25.0+ds-2ubuntu0.1~esm1","binary_name":"python3-virtualenv"},{"binary_version":"20.25.0+ds-2ubuntu0.1~esm1","binary_name":"virtualenv"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-22702.json"}},{"package":{"name":"python-virtualenv","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/python-virtualenv@20.31.2+ds-1?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["20.29.1+ds-1","20.31.2+ds-1"],"ecosystem_specific":{"binaries":[{"binary_version":"20.31.2+ds-1","binary_name":"python3-virtualenv"},{"binary_version":"20.31.2+ds-1","binary_name":"virtualenv"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-22702.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L"},{"type":"Ubuntu","score":"medium"}]}