BIT-VIRTUALENV-2026-113732 virtualenv activate.fish runs commands from a path or prompt with a backslash before a quote

virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.2, FishActivator inherits ViaTemplateActivator.quote, which uses POSIX shlex.quote even though fish interprets backslashes and single quotes differently. An attacker-influenced environment path, --prompt, or...

CVE-2026-113732 virtualenv activate.fish runs commands from a path or prompt with a backslash before a quote

virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.2, FishActivator inherits ViaTemplateActivator.quote, which uses POSIX shlex.quote even though fish interprets backslashes and single quotes differently. An attacker-influenced environment path, --prompt, or...

CVE-2026-113732 virtualenv activate.fish runs commands from a path or prompt with a backslash before a quote

virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.2, FishActivator inherits ViaTemplateActivator.quote, which uses POSIX shlex.quote even though fish interprets backslashes and single quotes differently. An attacker-influenced environment path, --prompt, or...

CVE-2026-113732

The virtualenv tool for creating isolated Python environments is vulnerable to command injection in versions prior to 21.14.2 . The issue exists because FishActivator inherits ViaTemplateActivator.quote(), which incorrectly uses POSIX shlex.quote() for Fish shell environments. Because Fish handle...

Vulnerability related to improper handling of virtualenv output by Python Packaging Authority

A security vulnerability exists in Python Packaging Authority virtualenv versions prior to 21.14.2. This vulnerability arises because FishActivator inherits from ViaTemplateActivator.quote and calls POSIX shlex.quote. However, fish interprets backslashes and single quotes differently. Attackers c...