virtualenv Has TOCTOU Vulnerabilities in Directory Creation_CVE-2026-22702

4.5 / 10

MEDIUM

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L

Description

virtualenv is a tool for creating isolated virtual python environments. Prior to version 20.36.1, TOCTOU (Time-of-Check-Time-of-Use) vulnerabilities in virtualenv allow local attackers to perform symlink-based attacks on directory creation operations. An attacker with local access can exploit a race condition between directory existence checks and creation to redirect virtualenv's app_data and lock file operations to attacker-controlled locations. This issue has been patched in version 20.36.1.

Basic Information

ID CVE-2026-22702

Source GitHub_M

Published Jan 10, 2026 at 06:05

Affected Product

Vendor pypa

Product virtualenv

Version < 20.36.1

Affected Versions pypa virtualenv < 20.36.1

CWE Classification

CWE-59 CWE-362

References

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    "published": "2026-01-10T06:05:53.281Z",
    "modified": "2026-01-10T06:05:53.281Z",
    "type": "cve",
    "title": "virtualenv Has TOCTOU Vulnerabilities in Directory Creation",
    "source": "GitHub_M",
    "references": "https://github.com/pypa/virtualenv/security/advisories/GHSA-597g-3phw-6986\nhttps://github.com/pypa/virtualenv/pull/3013\nhttps://github.com/pypa/virtualenv/commit/dec4cec5d16edaf83a00a658f32d1e032661cebc",
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