CVE-2026-68939: Improper Neutralization of Special Elements used in an OS Command

Pyenv provides simple Python version management. Prior to 2.8.0, isversionsafe in libexec/pyenv-version-file-read accepts shell glob metacharacters in .python-version values, and unquoted PYENVVERSION expansion in libexec/pyenv-version-name, libexec/pyenv-which, libexec/pyenv-prefix,...