Bug 2545168 (CVE-2026-102937) - CVE-2026-102937 virtualenv: virtualenv: Arbitrary code execution via unescaped prompt in Windows activation script
Summary: CVE-2026-102937 virtualenv: virtualenv: Arbitrary code execution via unescape...
Keywords:
Status: NEW
Alias: CVE-2026-102937
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-10-02 12:56 UTC by OSIDB Bzimport
Modified: 2026-10-05 17:26 UTC (History)
69 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-10-02 12:56:56 UTC 
virtualenv is a tool for creating isolated virtual python environments. Prior to 21.7.12, BatchActivator.quote() returns prompt text unchanged before activate.bat inserts it into a cmd.exe set "VAR=value" statement. An attacker who influences --prompt, VIRTUALENV_PROMPT, or the corresponding configuration value can include a double quote that closes the assignment and leaves following cmd.exe operators as executable syntax. When a user activates the generated Windows environment, the injected commands run with that user's privileges. This issue is fixed in version 21.7.12.
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