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...

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...

Improper Validation of Integrity Check Value

Overview Affected versions of this package are vulnerable to Improper Validation of Integrity Check Value via the seed wheel acquisition logic in src/virtualenv/seed/wheels/acquire.py and pipinvoke.py, where wheels are cached and then passed to pip for installation without verifying their integri...

Symlink Attack

Overview Affected versions of this package are vulnerable to Symlink Attack via the create method in venv.py and viaglobalselfdo.py, where output directories are created without first verifying they reside within the intended virtual environment destination. An attacker who can plant a symlink or...

Symlink Attack

Overview Affected versions of this package are vulnerable to Symlink Attack via the create method in venv.py and viaglobalselfdo.py, where output directories are created without first verifying they reside within the intended virtual environment destination. An attacker who can plant a symlink or...

Resources Downloaded over Insecure Protocol

Overview Affected versions of this package are vulnerable to Resources Downloaded over Insecure Protocol in the seed wheel acquisition logic src/virtualenv/seed/wheels/acquire.py and src/virtualenv/seed/embed/pipinvoke.py when resolving and caching seed wheels pip, setuptools, wheel for new virtu...

CVE-2026-113724

A flaw was found in virtualenv. When cleaning up files, the deletion error-handling routine follows symbolic links when attempting to restore write permissions for removal. A local attacker can exploit this issue by planting a symbolic link pointing to a file owned by the executing user, causing...

CVE-2026-113721

A flaw was found in virtualenv. A local attacker can exploit this issue by pre-creating symbolic or hard links in a destination directory before an environment is set up. Because virtualenv does not properly check or replace existing links when writing configuration and activation files, it can...

CVE-2026-113725

A flaw was found in virtualenv. The bash activation script improperly escapes the virtual environment name when configuring the command prompt. If a user activates a virtual environment created with a specially crafted name, an attacker can achieve arbitrary code execution in the user's shell...

CVE-2026-113723

A flaw was found in virtualenv. This vulnerability allows arbitrary code execution if an attacker can influence the prompt text provided during environment creation. When a user subsequently activates the environment in a bash shell, the unvalidated prompt text is executed as shell syntax, allowi...

CVE-2026-113722

A flaw was found in virtualenv. Due to improper quoting of interpreter paths when generating script wrappers, an attacker who influences the environment destination path can achieve arbitrary code execution. When a user subsequently executes a generated script launcher, embedded shell commands ar...

DEBIAN-CVE-2026-113725

virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.7, the bash activate script escapes the environment name for only one of the two passes bash makes over PS1, so a backslash in the name undoes the escaping and a name containing $... runs as commands in the...

DEBIAN-CVE-2026-113724

virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.9, the safedelete deletion error handler responds to a failed removal by reading mode bits with os.lstatpath and applying owner-write permission with os.chmodpath, ..., which follows a symlink. A planted link...

CVE-2026-113725

virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.7, the bash activate script escapes the environment name for only one of the two passes bash makes over PS1, so a backslash in the name undoes the escaping and a name containing $... runs as commands in the...

CVE-2026-113724

virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.9, the safedelete deletion error handler responds to a failed removal by reading mode bits with os.lstatpath and applying owner-write permission with os.chmodpath, ..., which follows a symlink. A planted link...

DEBIAN-CVE-2026-113723

virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.9, caller-supplied prompt text can become executable syntax in the bash activation prompt. An attacker must influence the value passed to virtualenv, and a user must subsequently activate the environment and dr...

DEBIAN-CVE-2026-113719

virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.9, PipInstall.uninstallpreviousversion accepts existing seed-package metadata and uninstalldist joins entries from toplevel.txt and RECORD to site-packages without checking containment. When a reused destinatio...

DEBIAN-CVE-2026-113722

virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.9, virtualenv's ScriptMakerCustom and pip pass an incompletely quoted interpreter path to distlib ScriptMaker when generating POSIX console scripts. When the path contains a space or produces a shebang longer...

DEBIAN-CVE-2026-113718

virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.9, POSIX xonsh activation quote uses repr to write printable non-ASCII prompt or destination data into UTF-8 activate.xsh, while xonsh can read that script using $XONSHENCODING. Under a legacy multibyte codec...

DEBIAN-CVE-2026-113721

virtualenv is a tool for creating isolated virtual python environments. Prior to 21.14.9, ViaTemplateActivator.generate removes an existing output only when Path.exists is true, allowing a dangling symlink to survive and redirect generated activation content, while PyEnvCfg.write opens pyvenv.cfg...