CVE-2025-27516 in Jinja2

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[CVE-2025-27516:](https://nvd.nist.gov/vuln/detail/CVE-2025-27516)

Jinja is an extensible templating engine. Prior to 3.1.6, an oversight in how the Jinja sandboxed environment interacts with the |attr filter allows an attacker that controls the content of a template to execute arbitrary Python code. To exploit the vulnerability, an attacker needs to control the content of a template. Whether that is the case depends on the type of application using Jinja. This vulnerability impacts users of applications which execute untrusted templates. Jinja's sandbox does catch calls to str.format and ensures they don't escape the sandbox. However, it's possible to use the |attr filter to get a reference to a string's plain format method, bypassing the sandbox. After the fix, the |attr filter no longer bypasses the environment's attribute lookup. This vulnerability is fixed in 3.1.6.

The security vulnerability (CVE-2025-27516) exists in Jinja2 version 3.1.5, which was identified on security scan through the following dependency chain:

1. magento2-functional-testing-framework
2. csharpru/vault-php (^4.2.1)
3. sphinx_rtd_theme (documentation theme)
4. jinja2-3.1.5-py3-none-any.whl (the vulnerable component)

Start by tracing the listed dependency chain from magento2-functional-testing-framework through csharpru/vault-php and sphinx_rtd_theme to Jinja2 3.1.5. Confirm where the vulnerable version is introduced and verify that the completed change removes the CVE-2025-27516 finding by using the fixed Jinja version.

Written by the indexing model from the issue text.