{"cve":"CVE-2026-113715","nvd":{"published":"2026-10-20T20:17:17.690","modified":"2026-10-23T02:16:56.967","status":"Awaiting Analysis","description":"virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.9, the stdlib venv creator reads generated pyvenv.cfg with str.splitlines() and merges parsed keys over virtualenv's selected configuration. An untrusted caller who influences the destination pathname can include a line-boundary character such as U+2028 to inject keys including home and include-system-site-packages, causing path data to change configuration structure before final output. Setting include-system-site-packages to true weakens environment isolation, while an altered home can change which standard-library files the interpreter loads if the attacker also controls that location. The builtin creator does not use this readback path. This issue is fixed in version 21.14.9.","cvss_v4":{"vector":"CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N","score":2.0},"cvss_v3":null,"cwes":["CWE-93"],"references":["https://github.com/pypa/virtualenv/commit/b0008a58885ded9227faf8f910c6c402712c750a","https://github.com/pypa/virtualenv/pull/3426","https://github.com/pypa/virtualenv/releases/tag/21.14.9","https://github.com/pypa/virtualenv/security/advisories/GHSA-qmx5-4p3x-wvqf","https://github.com/pypa/virtualenv/security/advisories/GHSA-qmx5-4p3x-wvqf"],"products":[],"source":"nvd","synced_at":"2026-10-23T16:39:26.291718493+00:00"},"epss":{"cve":"CVE-2026-113715","score":0.00242,"percentile":0.15252,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-qmx5-4p3x-wvqf","url":"https://osv.dev/vulnerability/GHSA-qmx5-4p3x-wvqf","summary":"virtualenv: Venv configuration readback can reinterpret path boundaries","modified":"2026-10-23T22:30:04.117932150Z","packages":[{"ecosystem":"PyPI","name":"virtualenv","purl":"pkg:pypi/virtualenv","ranges":["<21.14.9"],"fixed":["21.14.9"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}