CVE-2026-113715
CVE-2026-113715 · virtualenv: Venv configuration readback can reinterpret path boundaries
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 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 2.0 · Low · EPSS 0.2% · 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-qmx5-4p3x-wvqf
- https://github.com/pypa/virtualenv/pull/3426
- https://github.com/pypa/virtualenv/commit/b0008a58885ded9227faf8f910c6c402712c750a
- https://github.com/pypa/virtualenv/releases/tag/21.14.9
- https://nvd.nist.gov/vuln/detail/CVE-2026-113715