CVE-2026-113716
CVE-2026-113716 · virtualenv: Builtin creation follows linked environment directories
This page contains facts from public vulnerability sources. Check the original advisory before updating.
virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.9, the builtin creator calls ensure_dir() for executable, library, and package directories, and ensure_dir() accepts an existing symlink to a directory because exists() follows it. Interpreter creation, seed installation, and activation generation then write through the linked parent outside the requested destination when another local account prepared the tree and the invoking user can access the target. The --clear option removes the planted tree first, while ordinary creation reaches it; arbitrary attacker-selected output bytes are not established. This issue is fixed in version 21.14.9.
CVSS 4.5 · Medium · EPSS 0.1% · Fix available
- Published
- Updated
Affected products and versions
virtualenv
- Versions
- < 21.14.9: Affected
No fix published
python-virtualenv Debian:12
- Versions
- 20.17.1+ds-1
- 20.19.0+ds-1
- 20.21.0+ds-1
- 20.23.0+ds-1
- 20.23.0+ds-2
- 20.24.1+ds-1
- 20.24.6+ds-1
- 20.24.6+ds-2
- 20.25.0+ds-1
- 20.25.0+ds-2
- 20.25.1+ds-1
- 20.26.1+ds-1
- 20.26.2+ds-1
- 20.26.6+ds-1
- 20.27.0+ds-1
- 20.28.0+ds-1
- 20.29.1+ds-1
- 20.29.3+ds-1
- 20.30.0+ds-1
- 20.30.0+ds-2
- 20.30.0+ds-3
- 20.31.2+ds-1
- 20.33.1+ds-1
- 20.34.0+ds-1
- 20.35.3+ds-1
- 20.35.4+ds-1
- 20.36.1+ds-1
- 20.38.0+ds-1
- 21.2.0+ds-1
- 21.2.4+ds-1
- 21.3.1+ds-1
- 21.4.1+ds-1
- 21.5.1+ds-1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
python-virtualenv Debian:13
- Versions
- 20.31.2+ds-1
- 20.31.2+ds-1+deb13u1
- 20.33.1+ds-1
- 20.34.0+ds-1
- 20.35.3+ds-1
- 20.35.4+ds-1
- 20.36.1+ds-1
- 20.38.0+ds-1
- 21.2.0+ds-1
- 21.2.4+ds-1
- 21.3.1+ds-1
- 21.4.1+ds-1
- 21.5.1+ds-1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
python-virtualenv Debian:14
- Versions
- 20.31.2+ds-1
- 20.33.1+ds-1
- 20.34.0+ds-1
- 20.35.3+ds-1
- 20.35.4+ds-1
- 20.36.1+ds-1
- 20.38.0+ds-1
- 21.2.0+ds-1
- 21.2.4+ds-1
- 21.3.1+ds-1
- 21.4.1+ds-1
- 21.5.1+ds-1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
virtualenv PyPI
- Versions
- 0.8
- 0.8.1
- 0.8.2
- 0.8.3
- 0.8.4
- 0.9
- 0.9.1
- 0.9.2
- 1.0
- 1.1
- 1.10
- 1.10.1
- 1.11
- 1.11.1
- 1.11.2
- 1.11.3
- 1.11.4
- 1.11.5
- 1.11.6
- 1.2
- 1.3
- 1.3.1
- 1.3.2
- 1.3.3
- 1.3.4
- 1.4
- 1.4.1
- 1.4.2
- 1.4.3
- 1.4.4
- 1.4.5
- 1.4.6
- 1.4.7
- 1.4.8
- 1.4.9
- 1.4rc1
- 1.5
- 1.5.1
- 1.5.2
- 1.6
- 1.6.1
- 1.6.2
- 1.6.3
- 1.6.4
- 1.7
- 1.7.1
- 1.7.1.1
- 1.7.1.2
- 1.7.2
- 1.8
- 1.8.1
- 1.8.2
- 1.8.3
- 1.8.4
- 1.9
- 1.9.1
- 12.0
- 12.0.1
- 12.0.2
- 12.0.4
- 12.0.5
- 12.0.6
- 12.0.7
- 12.1.0
- 12.1.1
- 13.0.0
- 13.0.1
- 13.0.2
- 13.0.3
- 13.1.0
- 13.1.1
- 13.1.2
- 14.0.0
- 14.0.1
- 14.0.2
- 14.0.3
- 14.0.4
- 14.0.5
- 14.0.6
- 15.0.0
- 15.0.1
- 15.0.2
- 15.0.3
- 15.1.0
- 15.2.0
- 16.0.0
- 16.1.0
- 16.2.0
- 16.3.0
- 16.3.1.dev0
- 16.4.0
- 16.4.1
- 16.4.3
- 16.4.4.dev0
- 16.5.0
- 16.6.0
- 16.6.1
- 16.6.2
- 16.7.0
- 16.7.1
- 16.7.10
- 16.7.11
- 16.7.12
- 16.7.2
- 16.7.3
- 16.7.4
- 16.7.5
- 16.7.6
- 16.7.7
- 16.7.8
- 16.7.9
- 20.0.0
- 20.0.0b1
- 20.0.0b2
- 20.0.1
- 20.0.10
- 20.0.11
- 20.0.12
- 20.0.13
- 20.0.14
- 20.0.15
- 20.0.16
- 20.0.17
- 20.0.18
- 20.0.19
- 20.0.2
- 20.0.20
- 20.0.21
- 20.0.22
- 20.0.23
- 20.0.24
- 20.0.25
- 20.0.26
- 20.0.27
- 20.0.28
- 20.0.29
- 20.0.3
- 20.0.30
- 20.0.31
- 20.0.32
- 20.0.33
- 20.0.34
- 20.0.35
- 20.0.4
- 20.0.5
- 20.0.6
- 20.0.7
- 20.0.8
- 20.0.9
- 20.1.0
- 20.10.0
- 20.11.0
- 20.11.1
- 20.11.2
- 20.12.0
- 20.12.1
- 20.13.0
- 20.13.1
- 20.13.2
- 20.13.3
- 20.13.4
- 20.14.0
- 20.14.1
- 20.15.0
- 20.15.1
- 20.16.0
- 20.16.1
- 20.16.2
- 20.16.3
- 20.16.4
- 20.16.5
- 20.16.6
- 20.16.7
- 20.17.0
- 20.17.1
- 20.18.0
- 20.19.0
- 20.2.0
- 20.2.1
- 20.2.2
- 20.20.0
- 20.21.0
- 20.21.1
- 20.22.0
- 20.23.0
- 20.23.1
- 20.24.0
- 20.24.1
- 20.24.2
- 20.24.3
- 20.24.4
- 20.24.5
- 20.24.6
- 20.24.7
- 20.25.0
- 20.25.1
- 20.25.2
- 20.25.3
- 20.26.0
- 20.26.1
- 20.26.2
- 20.26.3
- 20.26.4
- 20.26.5
- 20.26.6
- 20.27.0
- 20.27.1
- 20.28.0
- 20.28.1
- 20.29.0
- 20.29.1
- 20.29.2
- 20.29.3
- 20.3.0
- 20.3.1
- 20.30.0
- 20.31.0
- 20.31.1
- 20.31.2
- 20.32.0
- 20.33.0
- 20.33.1
- 20.34.0
- 20.35.0
- 20.35.1
- 20.35.2
- 20.35.3
- 20.35.4
- 20.36.0
- 20.36.1
- 20.38.0
- 20.39.0
- 20.39.1
- 20.4.0
- 20.4.1
- 20.4.2
- 20.4.3
- 20.4.4
- 20.4.5
- 20.4.6
- 20.4.7
- 20.5.0
- 20.6.0
- 20.7.0
- 20.7.1
- 20.7.2
- 20.8.0
- 20.8.1
- 20.9.0
- 21.0.0
- 21.1.0
- 21.10.0
- 21.11.0
- 21.11.1
- 21.12.0
- 21.12.1
- 21.13.0
- 21.14.0
- 21.14.1
- 21.14.2
- 21.14.3
- 21.14.4
- 21.14.5
- 21.14.6
- 21.14.7
- 21.14.8
- 21.2.0
- 21.2.1
- 21.2.2
- 21.2.3
- 21.2.4
- 21.3.0
- 21.3.1
- 21.3.2
- 21.3.3
- 21.4.0
- 21.4.1
- 21.4.2
- 21.4.3
- 21.5.0
- 21.5.1
- 21.5.2
- 21.6.0
- 21.6.1
- 21.7.0
- 21.7.1
- 21.7.10
- 21.7.11
- 21.7.12
- 21.7.13
- 21.7.14
- 21.7.15
- 21.7.16
- 21.7.2
- 21.7.3
- 21.7.4
- 21.7.5
- 21.7.6
- 21.7.7
- 21.7.8
- 21.7.9
- 21.8.1
- 21.9.0
- 21.9.1
- Affected ranges
- ECOSYSTEM: < 21.14.9
Update to 21.14.9
python-virtualenv Ubuntu:14.04:LTS
- Versions
- 1.10.1-1
- 1.11-1
- 1.11-2
- 1.11.4-1
- 1.11.4-1ubuntu1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
python-virtualenv Ubuntu:16.04:LTS
- Versions
- 1.11.6+ds-1
- 14.0.5+ds-1
- 14.0.5+ds-2
- 14.0.5+ds-4
- 15.0.0+ds-1
- 15.0.0+ds-2
- 15.0.1+ds-1
- 15.0.1+ds-2
- 15.0.1+ds-3
- 15.0.1+ds-3ubuntu1
- 15.0.1+ds-3ubuntu1.1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
python-virtualenv Ubuntu:18.04:LTS
- Versions
- 15.1.0+ds-1
- 15.1.0+ds-1.1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
python-virtualenv Ubuntu:Pro:20.04:LTS
- Versions
- 15.1.0+ds-2
- 15.1.0+ds-2build1
- 15.1.0+ds-2ubuntu1
- 20.0.13-1
- 20.0.17-1
- 20.0.17-1ubuntu0.3
- 20.0.17-1ubuntu0.4
- 20.0.17-1ubuntu0.4+esm1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
python-virtualenv Ubuntu:Pro:22.04:LTS
- Versions
- 20.4.6+ds-2
- 20.10.0+ds-1
- 20.12.1+ds-1
- 20.13.0+ds-1
- 20.13.0+ds-2
- 20.13.0+ds-2ubuntu0.1~esm1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
python-virtualenv Ubuntu:Pro:24.04:LTS
- Versions
- 20.24.1+ds-1
- 20.24.6+ds-1
- 20.24.6+ds-2
- 20.25.0+ds-1
- 20.25.0+ds-2
- 20.25.0+ds-2ubuntu0.1~esm1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
python-virtualenv Ubuntu:26.10
- Versions
- 20.36.1+ds-1
- 21.4.1+ds-1
- 21.5.1+ds-1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
python-virtualenv Ubuntu:26.04:LTS
- Versions
- 20.31.2+ds-1
- 20.35.3+ds-1
- 20.35.4+ds-1
- 20.36.1+ds-1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
Original sources
- https://github.com/pypa/virtualenv/security/advisories/GHSA-cw65-gx24-rc82
- https://github.com/pypa/virtualenv/pull/3429
- https://github.com/pypa/virtualenv/commit/554d9f9d4f7758f5cf53f993031e29787f1f74c5
- https://github.com/pypa/virtualenv/releases/tag/21.14.9
- https://nvd.nist.gov/vuln/detail/CVE-2026-113716