{"id":"CVE-2026-102930","title":"virtualenv is a tool for creating isolated virtual python environments","summary":"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 …","severity":"high","cvss":7.7,"cvssVector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","cwe":["CWE-494"],"vendor":"pypa","product":"virtualenv","affected":["virtualenv < 21.7.12"],"published":"2026-09-29","updated":"2026-09-30","sourceUpdated":"2026-09-30T19:38:27.293","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-102930","references":[{"url":"https://github.com/pypa/virtualenv/commit/a01ed3e2f239d6ab1fce62c5c7664ccf268fff6d","label":"security-advisories@github.com"},{"url":"https://github.com/pypa/virtualenv/pull/3251","label":"security-advisories@github.com"},{"url":"https://github.com/pypa/virtualenv/security/advisories/GHSA-94p9-xgh2-xp45","label":"security-advisories@github.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-102930.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-102930"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2543652"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-102930"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-102930"},{"url":"https://github.com/pypa/advisory-database/tree/main/vulns/virtualenv/PYSEC-2026-4011.yaml"},{"url":"https://github.com/pypa/virtualenv"},{"url":"https://github.com/pypa/virtualenv/releases/tag/21.7.12"},{"url":"https://pypi.org/project/virtualenv"},{"url":"https://github.com/advisories/GHSA-94p9-xgh2-xp45"},{"url":"https://access.redhat.com/errata/RHSA-2026:84734"}],"tags":["nvd","cve.org","csaf","vex","red-hat","ghsa","pip","osv"],"epss":0.00197,"epssPercentile":0.09286,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-09-30T14:02:14.766019Z"},"cvssSource":"cna","scores":{"cna":7.7,"vendor":7.5},"ingestedAt":"2026-09-29T21:49:08.216Z","aliases":["GHSA-94p9-xgh2-xp45","PYSEC-2026-4011","BIT-virtualenv-2026-102930"],"ecosystem":"pip","patched":["virtualenv 21.7.12"],"slug":"CVE-2026-102930","body":"## Overview\n\nvirtualenv 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Important · affected: OpenShift Lightspeed, Red Hat Ansible Automation Platform 2, Red Hat Enterprise Linux 8, Red Hat OpenShift AI (RHOAI), Red Hat OpenShift Dev Spaces, Red Hat Satellite 6, … · no fix planned: OpenShift Lightspeed, Red Hat Ansible Automation Platform 2, Red Hat Enterprise Linux 8, Red Hat OpenShift AI (RHOAI), … · updated 2026-10-19 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-102930.json)\n- **RHSA-2026:84734** · Red Hat · fixed in: Red Hat OpenShift AI 3.4 · released 2026-10-19 · [advisory](https://access.redhat.com/errata/RHSA-2026:84734)\n\n## Package advisory (CVE-2026-102930)\n\nAffected packages:\n\n- `virtualenv <= 21.7.11`\n\nPatched in:\n\n- `virtualenv 21.7.12`\n\nSource: https://github.com/advisories/GHSA-94p9-xgh2-xp45","depth":"twilight","depthScore":42,"depthScoreParts":{"impact":42.4,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}