Template Injection Affecting jinja2 package, versions [,3.1.6)
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-JINJA2-9292516
- published6 Mar 2025
- disclosed5 Mar 2025
- creditsecuringapps
Introduced: 5 Mar 2025
CVE-2025-27516 (opens in a new tab)How to fix?
Upgrade Jinja2 to version 3.1.6 or higher.
Overview
Jinja2 is a template engine written in pure Python. It provides a Django inspired non-XML syntax but supports inline expressions and an optional sandboxed environment.
Affected versions of this package are vulnerable to Template Injection through the |attr filter. An attacker that controls the content of a template can escape the sandbox and execute arbitrary Python code by using the |attr filter to get a reference to a string's plain format method, bypassing the environment's attribute lookup.
Note:
This is only exploitable if the application executes untrusted templates.