CVE-2026-102925

virtualenv is a tool for creating isolated virtual python environments. Prior to 21.7.13, the generated activate bash and zsh and activate.fish scripts place values already escaped by shlex.quote inside an additional quoted context. In the bash and zsh script, a crafted virtual environment path...

CVE-2026-102938

virtualenv is a tool for creating isolated virtual python environments. Prior to 21.7.11, PyEnvCfg.write writes prompt values verbatim to the line-oriented pyvenv.cfg format while PyEnvCfg.readvalues parses the file with str.splitlines and accepts the last value for duplicate keys. An attacker wh...

CVE-2026-102938 virtualenv writes prompt values into pyvenv.cfg without sanitizing line boundaries, allowing configuration injection

virtualenv is a tool for creating isolated virtual python environments. Prior to 21.7.11, PyEnvCfg.write writes prompt values verbatim to the line-oriented pyvenv.cfg format while PyEnvCfg.readvalues parses the file with str.splitlines and accepts the last value for duplicate keys. An attacker wh...

CVE-2026-102938

virtualenv is a tool for creating isolated virtual python environments. Prior to 21.7.11, PyEnvCfg.write writes prompt values verbatim to the line-oriented pyvenv.cfg format while PyEnvCfg.readvalues parses the file with str.splitlines and accepts the last value for duplicate keys. An attacker wh...

CVE-2026-102938

The virtualenv tool, used for creating isolated Python environments, is vulnerable to configuration injection in versions prior to 21.7.11 . The root cause is that PyEnvCfg.write() writes prompt values verbatim to the pyvenv.cfg format, while PyEnvCfg._read_values() parses this file using str.spl...

CVE-2026-102938 virtualenv writes prompt values into pyvenv.cfg without sanitizing line boundaries, allowing configuration injection

virtualenv is a tool for creating isolated virtual python environments. Prior to 21.7.11, PyEnvCfg.write writes prompt values verbatim to the line-oriented pyvenv.cfg format while PyEnvCfg.readvalues parses the file with str.splitlines and accepts the last value for duplicate keys. An attacker wh...

CVE-2026-102938 virtualenv writes prompt values into pyvenv.cfg without sanitizing line boundaries, allowing configuration injection

virtualenv is a tool for creating isolated virtual python environments. Prior to 21.7.11, PyEnvCfg.write writes prompt values verbatim to the line-oriented pyvenv.cfg format while PyEnvCfg.readvalues parses the file with str.splitlines and accepts the last value for duplicate keys. An attacker wh...

CVE-2026-102937 virtualenv: Command injection via --prompt in activate.bat (batch activator)

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, VIRTUALENVPROMPT, or the corresponding...

CVE-2026-102937 virtualenv: Command injection via --prompt in activate.bat (batch activator)

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, VIRTUALENVPROMPT, or the corresponding...

CVE-2026-102937

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, VIRTUALENVPROMPT, or the corresponding...

CVE-2026-102937

The virtualenv tool, used for creating isolated Python environments, is vulnerable to command injection on Windows in versions prior to 21.7.12 . The root cause is in BatchActivator.quote() , which fails to properly escape prompt text before activate.bat inserts it into a cmd.exe `set

CVE-2026-102930 virtualenv: Downloaded seed wheels (pip/setuptools) are not integrity-checked before use

virtualenv is a tool for creating isolated virtual python environments. Prior to 21.7.12, downloadwheel accepts pip and setuptools seed wheels fetched for periodic updates or the --download option without checking their bytes against an authoritative digest equivalent to the embedded wheels'...

CVE-2026-102930

The virtualenv tool (prior to version 21.7.12 ) is vulnerable to a supply chain attack due to a lack of integrity verification in the download_wheel() function. When fetching pip and setuptools seed wheels for periodic updates or via the --download option, the software fails to verify the bytes a...

CVE-2026-102930 virtualenv: Downloaded seed wheels (pip/setuptools) are not integrity-checked before use

virtualenv is a tool for creating isolated virtual python environments. Prior to 21.7.12, downloadwheel accepts pip and setuptools seed wheels fetched for periodic updates or the --download option without checking their bytes against an authoritative digest equivalent to the embedded wheels'...

CVE-2026-102930 virtualenv: Downloaded seed wheels (pip/setuptools) are not integrity-checked before use

virtualenv is a tool for creating isolated virtual python environments. Prior to 21.7.12, downloadwheel accepts pip and setuptools seed wheels fetched for periodic updates or the --download option without checking their bytes against an authoritative digest equivalent to the embedded wheels'...

CVE-2026-102930

virtualenv is a tool for creating isolated virtual python environments. Prior to 21.7.12, downloadwheel accepts pip and setuptools seed wheels fetched for periodic updates or the --download option without checking their bytes against an authoritative digest equivalent to the embedded wheels'...

CVE-2026-102925

virtualenv is a tool for creating isolated virtual python environments. Prior to 21.7.13, the generated activate bash and zsh and activate.fish scripts place values already escaped by shlex.quote inside an additional quoted context. In the bash and zsh script, a crafted virtual environment path...

CVE-2026-102925 virtualenv bash and fish activation scripts execute commands embedded in paths

virtualenv is a tool for creating isolated virtual python environments. Prior to 21.7.13, the generated activate bash and zsh and activate.fish scripts place values already escaped by shlex.quote inside an additional quoted context. In the bash and zsh script, a crafted virtual environment path...

CVE-2026-102925 virtualenv bash and fish activation scripts execute commands embedded in paths

virtualenv is a tool for creating isolated virtual python environments. Prior to 21.7.13, the generated activate bash and zsh and activate.fish scripts place values already escaped by shlex.quote inside an additional quoted context. In the bash and zsh script, a crafted virtual environment path...

CVE-2026-102925

The virtualenv tool (prior to version 21.7.13 ) contains a vulnerability where the generated activate (bash/zsh) and activate.fish scripts incorrectly nest values already escaped by shlex.quote within an additional quoted context. Specifically, a crafted virtual environment path can reach __VIRTU...