Уязвимость функции from_string шаблонизатора Jinja2 для языка программирования Python, позволяющая нарушителю оказать воздействие на конфиденциальность и целостность защищаемой информации

FileSystemBytecodeCache in Jinja2 2.7.2 does not properly create temporary directories, which allows local users to gain privileges by pre-creating a temporary directory with a user's uid.  NOTE: this vulnerability exists because of an incomplete fix for CVE-2014-1402.

The default configuration for bccache.FileSystemBytecodeCache in Jinja2 before 2.7.2 does not properly create temporary files, which allows local users to gain privileges via a crafted .cache file with a name starting with __jinja2_ in /tmp.

In Pallets Jinja before 2.10.1, str.format_map allows a sandbox escape.

An issue was discovered in Jinja2 2.10. The from_string function is prone to Server Side Template Injection (SSTI) where it takes the "source" parameter as a template object, renders it, and then returns it. The attacker can exploit it with {{INJECTION COMMANDS}} in a URI. NOTE: The maintainer and multiple third parties believe that this vulnerability isn't valid because users shouldn't use untrusted templates without sandboxing