| Name | CVE-2026-22702 |
| 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. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1125191 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| python-virtualenv (PTS) | bullseye | 20.4.0+ds-2+deb11u1 | vulnerable |
| bookworm | 20.17.1+ds-1 | vulnerable |
| trixie | 20.31.2+ds-1 | vulnerable |
| forky, sid | 20.36.1+ds-1 | fixed |
The information below is based on the following data on fixed versions.
Notes
[trixie] - python-virtualenv <no-dsa> (Minor issue)
[bookworm] - python-virtualenv <no-dsa> (Minor issue)
[bullseye] - python-virtualenv <postponed> (Minor issue, affected directories normally not in world-writable locations)
https://github.com/pypa/virtualenv/security/advisories/GHSA-597g-3phw-6986
https://github.com/pypa/virtualenv/pull/3013
Fixed by: https://github.com/pypa/virtualenv/commit/dec4cec5d16edaf83a00a658f32d1e032661cebc (20.36.1)