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.
"https://github.com/pypa/advisory-database/blob/main/vulns/jinja2/PYSEC-2014-8.yaml"