Critical Security Update for python-jinja2: CVE-2025-27516
Summary
RHSA-2025:7476: Red Hat Security Advisory: python-jinja2 security update. Affects python-jinja2 versions < 0:3.1.6-1.el10_0. Fixed in 0:3.1.6-1.el10_0. How to fix ↓
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Background
python-jinja2 is a popular templating engine for Python, widely used for rendering dynamic web pages. It allows developers to create HTML templates that can be populated with data, making it a crucial component in web development. The package is known for its flexibility and ease of use, but it has recently been identified as vulnerable to a security issue that could potentially compromise applications relying on it.
Vulnerability Detail
The vulnerability, identified as CVE-2025-27516, originates from a flaw in the python-jinja2 package that allows for remote code execution under certain conditions. This could lead to unauthorized access to sensitive data, manipulation of application behavior, or even complete system compromise. The vulnerability has a CVSS score of 7.3, indicating a high severity level, and it affects versions prior to 3.1.6-1.el10_0.
How To Fix
Minimum fixed version
0:3.1.6-1.el10_0
This is the first release that contains the fix.
sudo dnf update python-jinja2Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary workaround, consider limiting the use of the vulnerable features of python-jinja2 until the package can be updated. This may involve reviewing your application code to avoid using any potentially unsafe template rendering methods.
Conclusion
In summary, the python-jinja2 package has a critical vulnerability (CVE-2025-27516) that requires immediate attention. Users should update to the patched version to mitigate risks associated with this vulnerability. Utilizing tools like Vulert can help monitor and alert for such vulnerabilities in real-time.
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FAQ
CVE-2025-27516 is a security vulnerability in the python-jinja2 package that allows for remote code execution, potentially compromising applications that utilize this templating engine.
You can use Vulert's playground at Vulert Scanner to check if your application is affected by this vulnerability without needing to sign up.
The CVSS score for CVE-2025-27516 is 7.3, indicating a high severity level.
If immediate updates are not possible, review your application code to limit the use of vulnerable features and consider implementing additional security measures to mitigate risks.
More information can be found in the Red Hat Security Advisory at https://security.access.redhat.com/data/osv/RHSA-2025:7476.json.
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