flask-3.1.0-py3-none-any.whl: 1 vulnerabilities (highest severity is: 7.3)

[mend-for-github-com]

Vulnerable Library - flask-3.1.0-py3-none-any.whl

Path to dependency file: /sample/Archiving/requirements.txt

Path to vulnerable library: /sample/HelloWorld/requirements.txt,/sample/Archiving/requirements.txt

Vulnerabilities

CVE	Severity	CVSS	Exploit Maturity	EPSS	Dependency	Type	Fixed in (flask version)	Remediation Possible**	Reachability
CVE-2025-27516	High	7.3	Not Defined	0.0%	jinja2-3.1.5-py3-none-any.whl	Transitive	N/A*	❌

*For some transitive vulnerabilities, there is no version of direct dependency with a fix. Check the "Details" section below to see if there is a version of transitive dependency where vulnerability is fixed.

**In some cases, Remediation PR cannot be created automatically for a vulnerability despite the availability of remediation

Details

CVE-2025-27516

Vulnerable Library - jinja2-3.1.5-py3-none-any.whl

A very fast and expressive template engine.

Library home page: https://files.pythonhosted.org/packages/bd/0f/2ba5fbcd631e3e88689309dbe978c5769e883e4b84ebfe7da30b43275c5a/jinja2-3.1.5-py3-none-any.whl

Path to dependency file: /sample/HelloWorld/requirements.txt

Path to vulnerable library: /sample/HelloWorld/requirements.txt,/sample/Archiving/requirements.txt

Dependency Hierarchy:

• flask-3.1.0-py3-none-any.whl (Root Library)
  • ❌ jinja2-3.1.5-py3-none-any.whl (Vulnerable Library)

Found in base branch: main

Vulnerability Details

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.

Publish Date: 2025-03-05

URL: CVE-2025-27516

Threat Assessment

Exploit Maturity: Not Defined

EPSS: 0.0%

CVSS 3 Score Details (7.3)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Local
  • Attack Complexity: Low
  • Privileges Required: Low
  • User Interaction: Required
  • Scope: Unchanged
• Impact Metrics:
  • Confidentiality Impact: High
  • Integrity Impact: High
  • Availability Impact: High

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Release Date: 2025-03-05

Fix Resolution: 3.1.6