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virtualenv Has TOCTOU Vulnerabilities in Directory Creation

🗓️ 13 Jan 2026 18:45:57Reported by GitHub Advisory DatabaseType 
github
 github🔗 github.com👁 8 Views

TOCTOU in virtualenv allows local attackers to race directory creation, affecting app_data and lock files; fixed in 20.36.2.

Related
Detection
Refs
ReporterTitlePublishedViews
Family
IBM Security Bulletins		Security Bulletin: Multiple security vulnerabilities are addressed with IBM Cloud Pak for Business Automation iFixes for April 2026.
27 May 202616:29
–ibm
IBM Security Bulletins		Security Bulletin: IBM Watson Discovery Cartridge affected by vulnerability in virtualenv-20.26.3-py3-none-any.whl
29 Apr 202617:38
–ibm
IBM Security Bulletins		Security Bulletin: IBM Edge Data Collector uses virtualenv-20.26.6-py3-none-any.whl which is vulnerable to CVE-2026-22702.
30 Mar 202607:15
–ibm
IBM Security Bulletins		Security Bulletin: IBM Watson Speech Services Cartridge is vulnerable to a Time-of-Check to Time-of-Use in virtualenv [CVE-2026-22702]
27 Feb 202615:40
–ibm
Tenable Nessus		Amazon Linux 2023 : python3.13-virtualenv (ALAS2023-2026-1428)
19 Feb 202600:00
–nessus
Tenable Nessus		EulerOS 2.0 SP13 : python-virtualenv (EulerOS-SA-2026-1260)
10 Mar 202600:00
–nessus
Tenable Nessus		EulerOS 2.0 SP13 : python-virtualenv (EulerOS-SA-2026-1296)
10 Mar 202600:00
–nessus
Tenable Nessus		EulerOS Virtualization 2.12.1 : python-virtualenv (EulerOS-SA-2026-2088)
6 Jun 202600:00
–nessus
Tenable Nessus		EulerOS Virtualization 2.12.0 : python-virtualenv (EulerOS-SA-2026-2113)
6 Jun 202600:00
–nessus
Tenable Nessus		EulerOS Virtualization 2.13.1 : python-virtualenv (EulerOS-SA-2026-2148)
6 Jun 202600:00
–nessus
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Vulners
Node
virtualenvvirtualenvRange<20.36.1pip

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13 Jan 2026 18:45Current
6.4Medium risk
Vulners AI Score6.4
CVSS 3.14.5
EPSS0.00085
SSVC
CWE-59CWE-362
Time of checkVirtual environmentLocal attackerDirectory creationApp dataLock filesSoftware patch
8