CVE catalog
CVE-2026-113716
python-virtualenv: CVE-2026-113716
- Severity
- Medium · CVSS 4.5
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.14% · Oct 27, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | python-virtualenv | sid | 21.5.1+ds-1 | vulnerable |
| Debian | python-virtualenv | forky | 21.5.1+ds-1 | vulnerable |
| Debian | python-virtualenv | trixie | 20.31.2+ds-1+deb13u1 | vulnerable |
| Debian | python-virtualenv | bookworm | 20.17.1+ds-1 | vulnerable |
| Ubuntu | python-virtualenv | 14.04 | 1.10.1-1 | vulnerable |
| Ubuntu | python-virtualenv | 14.04 | 1.11-1 | vulnerable |
| Ubuntu | python-virtualenv | 14.04 | 1.11-2 | vulnerable |
| Ubuntu | python-virtualenv | 14.04 | 1.11.4-1 | vulnerable |
| Ubuntu | python-virtualenv | 14.04 | 1.11.4-1ubuntu1 | vulnerable |
| Ubuntu | python-virtualenv | 16.04 | 1.11.6+ds-1 | vulnerable |
| Ubuntu | python-virtualenv | 16.04 | 14.0.5+ds-1 | vulnerable |
| Ubuntu | python-virtualenv | 16.04 | 14.0.5+ds-2 | vulnerable |
| Ubuntu | python-virtualenv | 16.04 | 14.0.5+ds-4 | vulnerable |
| Ubuntu | python-virtualenv | 16.04 | 15.0.0+ds-1 | vulnerable |
| Ubuntu | python-virtualenv | 16.04 | 15.0.0+ds-2 | vulnerable |
| Ubuntu | python-virtualenv | 16.04 | 15.0.1+ds-1 | vulnerable |
| Ubuntu | python-virtualenv | 16.04 | 15.0.1+ds-2 | vulnerable |
| Ubuntu | python-virtualenv | 16.04 | 15.0.1+ds-3 | vulnerable |
| Ubuntu | python-virtualenv | 16.04 | 15.0.1+ds-3ubuntu1 | vulnerable |
| Ubuntu | python-virtualenv | 16.04 | 15.0.1+ds-3ubuntu1.1 | vulnerable |
| Ubuntu | python-virtualenv | 18.04 | 15.1.0+ds-1 | vulnerable |
| Ubuntu | python-virtualenv | 18.04 | 15.1.0+ds-1.1 | vulnerable |
| Ubuntu | python-virtualenv | pro | 20.24.1+ds-1 | vulnerable |
| Ubuntu | python-virtualenv | pro | 20.24.6+ds-1 | vulnerable |
| Ubuntu | python-virtualenv | pro | 20.24.6+ds-2 | vulnerable |
| Ubuntu | python-virtualenv | pro | 20.25.0+ds-1 | vulnerable |
| Ubuntu | python-virtualenv | pro | 20.25.0+ds-2 | vulnerable |
| Ubuntu | python-virtualenv | pro | 20.25.0+ds-2ubuntu0.1~esm1 | vulnerable |
| Ubuntu | python-virtualenv | 26.10 | 20.36.1+ds-1 | vulnerable |
| Ubuntu | python-virtualenv | 26.10 | 21.4.1+ds-1 | vulnerable |
| Ubuntu | python-virtualenv | 26.10 | 21.5.1+ds-1 | vulnerable |
| Ubuntu | python-virtualenv | 26.04 | 20.31.2+ds-1 | vulnerable |
| Ubuntu | python-virtualenv | 26.04 | 20.35.3+ds-1 | vulnerable |
| Ubuntu | python-virtualenv | 26.04 | 20.35.4+ds-1 | vulnerable |
| Ubuntu | python-virtualenv | 26.04 | 20.36.1+ds-1 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | python-virtualenv | source | sid | (unfixed) | not yet assigned | Not reported | [1151685] |
| Debian | python-virtualenv | source | forky | (unfixed) | not yet assigned | Not reported | [1151685] |
| Debian | python-virtualenv | source | trixie | (unfixed) | not yet assigned | Not reported | [1151685] |
| Debian | python-virtualenv | source | bookworm | (unfixed) | not yet assigned | Not reported | [1151685] |
Notes
[trixie] python-virtualenv: Minor issue
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [python3-virtualenv]Affected
Source package: [python-virtualenv]
Details (2)
20.17.1+ds-1· all · bookwormAffected
dsa · python-virtualenv · debian · bookworm; dsa · python-virtualenv · debian · 12
20.17.1+ds-1· all · bookwormAffected
dsa · python-virtualenv · debian · bookworm; dsa · python-virtualenv · debian · 12
- [virtualenv]Affected
Source package: [python-virtualenv]
Details (2)
20.17.1+ds-1· all · bookwormAffected
dsa · python-virtualenv · debian · bookworm; dsa · python-virtualenv · debian · 12
20.17.1+ds-1· all · bookwormAffected
dsa · python-virtualenv · debian · bookworm; dsa · python-virtualenv · debian · 12
[Debian 13 (Trixie)]
- [python3-virtualenv]Affected
Source package: [python-virtualenv]
Details (2)
20.31.2+ds-1+deb13u1· all · trixieAffected
dsa · python-virtualenv · debian · 13
20.31.2+ds-1+deb13u1· all · trixieAffected
dsa · python-virtualenv · debian · 13
- [virtualenv]Affected
Source package: [python-virtualenv]
Details (2)
20.31.2+ds-1+deb13u1· all · trixieAffected
dsa · python-virtualenv · debian · 13
20.31.2+ds-1+deb13u1· all · trixieAffected
dsa · python-virtualenv · debian · 13
Observed:
References
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-113716]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2026-113716]
- [https://security-tracker.debian.org/tracker/CVE-2026-113716]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-113716.json]
[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]