Improper Neutralization Affecting jinja2 package, versions [,3.1.5)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-PYTHON-JINJA2-8548987
- published24 Dec 2024
- disclosed23 Dec 2024
- creditSimon Leiner
Introduced: 23 Dec 2024
CVE-2024-56201 (opens in a new tab)How to fix?
Upgrade jinja2 to version 3.1.5 or higher.
Overview
Affected versions of this package are vulnerable to Improper Neutralization when importing a macro in a template whose filename is also a template. This will result in a SyntaxError: f-string: invalid syntax error message because the filename is not properly escaped, indicating that it is being treated as a format string.
Note: This is only exploitable when the attacker controls both the content and filename of a template and the application executes untrusted templates.