{"id":"CVE-2026-113714","state":"PUBLISHED","title":"virtualenv: Downloaded wheel selection and caching precede verification","description":"virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.9, download_wheel() writes package-index downloads directly into the reusable wheel/house cache before selecting a verification target from pip's textual Saved output. With default-index digest comparison enabled, a controlled package index can inject a misleading Saved line through a discarded link's data-requires-python attribute; this forged-line variant also requires knowledge of an absolute path to the genuine bundled wheel. The wrong path can then be hashed, while a digest mismatch leaves the rejected archive in the cache for later selection without verification. A separate rejected-cache-file variant requires control over downloaded data or archive selection but not the forged-line prerequisites. Explicit custom-index exceptions are outside the promised PyPI comparison, and the issue does not independently bypass TLS or establish control of default PyPI. This issue is fixed in version 21.14.9.","publishedAt":"2026-10-20T19:09:45.096Z","updatedAt":"2026-10-27T10:59:22.031Z","severity":{"score":2.3,"label":"Low","version":"4.0","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["pypa virtualenv"],"affected":[{"vendor":"pypa","product":"virtualenv","versions":[{"version":"< 21.14.9","status":"affected"}]}],"references":["https://github.com/pypa/virtualenv/security/advisories/GHSA-494p-63j8-28p3","https://github.com/pypa/virtualenv/pull/3430","https://github.com/pypa/virtualenv/commit/7babec66e043e1cc8bc66869a063653898719d96","https://github.com/pypa/virtualenv/releases/tag/21.14.9"],"weaknesses":["CWE-354"],"ingestedAt":"2026-10-29T20:10:43.281Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/113xxx/CVE-2026-113714.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-113714","state":"PUBLISHED","datePublished":"2026-10-20T19:09:45.096Z","dateUpdated":"2026-10-27T10:59:22.031Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-10-20T16:03:14.862Z"},"containers":{"cna":{"title":"virtualenv: Downloaded wheel selection and caching precede verification","descriptions":[{"lang":"en","value":"virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.9, download_wheel() writes package-index downloads directly into the reusable wheel/house cache before selecting a verification target from pip's textual Saved output. With default-index digest comparison enabled, a controlled package index can inject a misleading Saved line through a discarded link's data-requires-python attribute; this forged-line variant also requires knowledge of an absolute path to the genuine bundled wheel. The wrong path can then be hashed, while a digest mismatch leaves the rejected archive in the cache for later selection without verification. A separate rejected-cache-file variant requires control over downloaded data or archive selection but not the forged-line prerequisites. Explicit custom-index exceptions are outside the promised PyPI comparison, and the issue does not independently bypass TLS or establish control of default PyPI. This issue is fixed in version 21.14.9."}],"affected":[{"vendor":"pypa","product":"virtualenv","versions":[{"version":"< 21.14.9","status":"affected"}]}],"references":[{"url":"https://github.com/pypa/virtualenv/security/advisories/GHSA-494p-63j8-28p3","name":"https://github.com/pypa/virtualenv/security/advisories/GHSA-494p-63j8-28p3","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/pypa/virtualenv/pull/3430","name":"https://github.com/pypa/virtualenv/pull/3430","tags":["x_refsource_MISC"]},{"url":"https://github.com/pypa/virtualenv/commit/7babec66e043e1cc8bc66869a063653898719d96","name":"https://github.com/pypa/virtualenv/commit/7babec66e043e1cc8bc66869a063653898719d96","tags":["x_refsource_MISC"]},{"url":"https://github.com/pypa/virtualenv/releases/tag/21.14.9","name":"https://github.com/pypa/virtualenv/releases/tag/21.14.9","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"HIGH","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"PASSIVE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"LOW","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":2.3,"baseSeverity":"LOW","vectorString":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-354","lang":"en","description":"CWE-354: Improper Validation of Integrity Check Value","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-10-20T19:19:51.080Z"},"source":{"advisory":"GHSA-494p-63j8-28p3","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/pypa/virtualenv/security/advisories/GHSA-494p-63j8-28p3","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-27T10:59:09.539005Z","id":"CVE-2026-113714","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-27T10:59:22.031Z"}}]}}}