CVE-2026-113713

virtualenv: Temporary app-data can leave dangling seed package links

Published Oct 20, 2026 CVSS 4.0 · 4.4 Medium EPSS < 1% KEV · Not listed
Description
virtualenv is a tool for creating isolated virtual python environments. From 21.14.8 until 21.14.10, the app-data seeder can leave an environment linked to temporary package files that virtualenv deletes when creation finishes. The environment-variable and configuration-file forms of symlink_app_data can enable this state even though the command-line flag is disabled for temporary app-data. The resulting environment depends on a cache pathname that its owner no longer controls. This issue is fixed in version 21.14.10.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-4f8h-vr72-p32c virtualenv: Temporary app-data can leave dangling seed package links
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Weaknesses CWE-59
References
Metrics threat_severity

None

cvssV3_1

{'score': 6.7, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H'}

threat_severity

Moderate

Type Values Removed Values Added
First Time appeared Pypa
Pypa virtualenv
Vendors & Products Pypa
Pypa virtualenv
Type Values Removed Values Added
Description virtualenv is a tool for creating isolated virtual python environments. From 21.14.8 until 21.14.10, the app-data seeder can leave an environment linked to temporary package files that virtualenv deletes when creation finishes. The environment-variable and configuration-file forms of symlink_app_data can enable this state even though the command-line flag is disabled for temporary app-data. The resulting environment depends on a cache pathname that its owner no longer controls. This issue is fixed in version 21.14.10.
Title virtualenv: Temporary app-data can leave dangling seed package links
Weaknesses CWE-377
References
Metrics cvssV4_0

{'score': 4.4, 'vector': 'CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:P/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Oct 27, 2026, 1:37 PM
Reserved
Oct 20, 2026, 4:03 PM
Status
Awaiting Analysis
Published
Oct 20, 2026, 7:17 PM
Modified
Oct 27, 2026, 2:16 PM
Severity
Moderate
Public date
Oct 20, 2026, 7:06 PM