{"schemaVersion":3,"id":"CVE-2026-102930","aliases":["GHSA-94p9-xgh2-xp45","BIT-virtualenv-2026-102930","PYSEC-2026-4011","UBUNTU-CVE-2026-102930","DEBIAN-CVE-2026-102930","CGA-3rwm-h8jx-h62p","CGA-6vvm-7g5w-c55m","CGA-pc5c-rcg4-4hfj","CGA-w9jp-g76c-4cwq","CGA-63v8-hr8q-ggx4","CGA-8734-2fpv-jfhj","CGA-88x7-9g85-r62c","CGA-fw6h-27j4-4wjv"],"status":"published","duplicateOf":null,"title":null,"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.","dates":{"published":"2026-09-29T20:53:36.018Z","modified":"2026-09-30T14:02:24.390Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":7.7,"severity":"high","version":"4.0","versionLabel":"v4.0","source":"CVE.org","vector":"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","computed":false,"selection":"backend-summary"},"metrics":[{"version":"4.0","versionLabel":"v4.0","source":"CVE.org","score":7.7,"severity":"high","vector":"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","exploitability":null,"impact":null,"computed":false},{"version":"4.0","versionLabel":"v4.0","source":"OSV · Pypi","score":7.7,"severity":"high","vector":"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","exploitability":null,"impact":null,"computed":true},{"version":"4.0","versionLabel":"v4.0","source":"OSV · 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