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-2026-113718

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...

CVE-2026-113718

A flaw was found in virtualenv. This vulnerability could lead to arbitrary code execution when a user sources a generated xonsh activation script. Under certain multibyte character encodings, improper quoting of non-ASCII directory paths or prompt strings allows quote boundaries to be broken...

EUVD-2026-105299

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...

CVE-2026-113718

The virtualenv tool is vulnerable to code injection in versions prior to 21.14.9 . The issue exists in the POSIX xonsh activation quote() function, which uses repr() to write non-ASCII data into the UTF-8 activate.xsh script. When using legacy multibyte codecs like GBK or Big5 , a UTF-8 trail byt...

CVE-2026-113718 virtualenv: Xonsh activation literals depend on the script decoding codec

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...