CVE-2026-113732

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-2026-113776

virtualenv is a tool for creating isolated virtual python environments. From 20.26.6 until 21.14.2, ViaTemplateActivator.instantiatetemplate replaces placeholders one key at a time across the complete activation template, so trigger names such as VIRTUALNAME, VIRTUALENV, or VIRTUALPROMPT inside a...

DEBIAN-CVE-2026-113726

virtualenv is a tool for creating isolated virtual python environments. Prior to 21.13.0, the bash activate script that zsh also sources leaves the environment name unescaped; from 21.13.0 until 21.14.4, it escapes backslashes, dollar signs, and backticks only when BASHVERSION is set, so zsh...

CVE-2026-113726

virtualenv is a tool for creating isolated virtual python environments. Prior to 21.13.0, the bash activate script that zsh also sources leaves the environment name unescaped; from 21.13.0 until 21.14.4, it escapes backslashes, dollar signs, and backticks only when BASHVERSION is set, so zsh...

CVE-2026-113726 virtualenv activate runs commands from the environment name in zsh with PROMPT_SUBST

virtualenv is a tool for creating isolated virtual python environments. Prior to 21.13.0, the bash activate script that zsh also sources leaves the environment name unescaped; from 21.13.0 until 21.14.4, it escapes backslashes, dollar signs, and backticks only when BASHVERSION is set, so zsh...

CVE-2026-113726

The virtualenv tool is vulnerable to command injection when using the bash activate script in zsh with PROMPT_SUBST enabled. Prior to version 21.13.0, the environment name was left unescaped; from 21.13.0 until 21.14.4, it only escaped specific characters when BASH_VERSION was set, allowing zsh t...

CVE-2026-113726 virtualenv activate runs commands from the environment name in zsh with PROMPT_SUBST

virtualenv is a tool for creating isolated virtual python environments. Prior to 21.13.0, the bash activate script that zsh also sources leaves the environment name unescaped; from 21.13.0 until 21.14.4, it escapes backslashes, dollar signs, and backticks only when BASHVERSION is set, so zsh...

CVE-2026-113726

virtualenv is a tool for creating isolated virtual python environments. Prior to 21.13.0, the bash activate script that zsh also sources leaves the environment name unescaped; from 21.13.0 until 21.14.4, it escapes backslashes, dollar signs, and backticks only when BASHVERSION is set, so zsh...

CVE-2026-113726

virtualenv is a tool for creating isolated virtual python environments. Prior to 21.13.0, the bash activate script that zsh also sources leaves the environment name unescaped; from 21.13.0 until 21.14.4, it escapes backslashes, dollar signs, and backticks only when BASHVERSION is set, so zsh...

CVE-2026-113776

The virtualenv tool, used for creating isolated Python environments, is vulnerable to OS Command Injection and Code Injection in versions 20.26.6 through 21.14.2 . The root cause lies in ViaTemplateActivator.instantiate_template(), which replaces placeholders (e.g., __VIRTUAL_NAME__, __VIRTUAL_EN...

CVE-2026-113776 virtualenv activation scripts run code from a path that contains a placeholder name

virtualenv is a tool for creating isolated virtual python environments. From 20.26.6 until 21.14.2, ViaTemplateActivator.instantiatetemplate replaces placeholders one key at a time across the complete activation template, so trigger names such as VIRTUALNAME, VIRTUALENV, or VIRTUALPROMPT inside a...

CVE-2026-113776

virtualenv is a tool for creating isolated virtual python environments. From 20.26.6 until 21.14.2, ViaTemplateActivator.instantiatetemplate replaces placeholders one key at a time across the complete activation template, so trigger names such as VIRTUALNAME, VIRTUALENV, or VIRTUALPROMPT inside a...

CVE-2026-113776 virtualenv activation scripts run code from a path that contains a placeholder name

virtualenv is a tool for creating isolated virtual python environments. From 20.26.6 until 21.14.2, ViaTemplateActivator.instantiatetemplate replaces placeholders one key at a time across the complete activation template, so trigger names such as VIRTUALNAME, VIRTUALENV, or VIRTUALPROMPT inside a...

CVE-2026-113776

virtualenv is a tool for creating isolated virtual python environments. From 20.26.6 until 21.14.2, ViaTemplateActivator.instantiatetemplate replaces placeholders one key at a time across the complete activation template, so trigger names such as VIRTUALNAME, VIRTUALENV, or VIRTUALPROMPT inside a...

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...

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 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 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...

Insecure Temporary File

Overview Affected versions of this package are vulnerable to Insecure Temporary File via the FromAppData seeder in src/virtualenv/seed/embed/viaappdata/viaappdata.py when --symlink-app-data is used with a transient temporary app-data directory. Because the app-data directory is removed after...