{"id":"CVE-2026-113714","published":"2026-10-20T19:17:34.050","lastModified":"2026-10-20T20:17:17.563","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.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":["CWE-354"],"vendors":[],"products":[],"references":[{"url":"https://github.com/pypa/virtualenv/commit/7babec66e043e1cc8bc66869a063653898719d96","tags":[]},{"url":"https://github.com/pypa/virtualenv/pull/3430","tags":[]},{"url":"https://github.com/pypa/virtualenv/releases/tag/21.14.9","tags":[]},{"url":"https://github.com/pypa/virtualenv/security/advisories/GHSA-494p-63j8-28p3","tags":[]}],"exploitRefs":[{"url":"https://github.com/pypa/virtualenv/commit/7babec66e043e1cc8bc66869a063653898719d96","tags":[]},{"url":"https://github.com/pypa/virtualenv/pull/3430","tags":[]},{"url":"https://github.com/pypa/virtualenv/releases/tag/21.14.9","tags":[]},{"url":"https://github.com/pypa/virtualenv/security/advisories/GHSA-494p-63j8-28p3","tags":[]}],"hasPoc":true,"ai":null}