Auto escape should be set to true

Docs > Code Analysis > Static Analysis Rules > Auto escape should be set to true

Metadata

ID: python-security/jinja-autoescape

Language: Python

Severity: Notice

Category: Security

CWE: 94

Description

By default, jinja2 is not autoescaping. This can lead to XSS attacks. The autoescape parameter should always be True.

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Non-Compliant Code Examples

import jinja2
env = jinja2.Environment(
    loader=PackageLoader("yourapp"),
    autoescape=False # should be True
)

from jinja2 import Environment, PackageLoader, select_autoescape
env = Environment(
    loader=PackageLoader("yourapp"),
    autoescape=False # should be True
)

Compliant Code Examples

import jinja2
env = Environment(
    loader=PackageLoader("yourapp"),
    autoescape=True
)

from jinja2 import Environment, PackageLoader, select_autoescape
env = Environment(
    loader=PackageLoader("yourapp"),
    autoescape=select_autoescape()
)

from jinja2 import Environment, PackageLoader, select_autoescape
env = Environment(
    loader=PackageLoader("yourapp"),
    autoescape=True
)