Vulnerable Library - flask-2.2.5-pyhd8ed1ab_0.conda
A simple framework for building complex web applications.
Library home page: https://api.anaconda.org/download/conda-forge/flask/2.2.5/noarch/flask-2.2.5-pyhd8ed1ab_0.conda
Path to dependency file: /environment.yml
Path to vulnerable library: /home/wss-scanner/miniconda3/pkgs/flask-2.2.5-pyhd8ed1ab_0.conda
Found in HEAD commit: 9ea10b6d35753f6a88fc2620fa0543106d490e4a
Vulnerabilities
**In some cases, Remediation PR cannot be created automatically for a vulnerability despite the availability of remediation
Details
CVE-2026-27205
Vulnerable Library - flask-2.2.5-pyhd8ed1ab_0.conda
A simple framework for building complex web applications.
Library home page: https://api.anaconda.org/download/conda-forge/flask/2.2.5/noarch/flask-2.2.5-pyhd8ed1ab_0.conda
Path to dependency file: /environment.yml
Path to vulnerable library: /home/wss-scanner/miniconda3/pkgs/flask-2.2.5-pyhd8ed1ab_0.conda
Dependency Hierarchy:
- ❌ flask-2.2.5-pyhd8ed1ab_0.conda (Vulnerable Library)
Found in HEAD commit: 9ea10b6d35753f6a88fc2620fa0543106d490e4a
Found in base branch: develop
Vulnerability Details
Flask is a web server gateway interface (WSGI) web application framework. In versions 3.1.2 and below, when the session object is accessed, Flask should set the Vary: Cookie header., resulting in a Use of Cache Containing Sensitive Information vulnerability. The logic instructs caches not to cache the response, as it may contain information specific to a logged in user. This is handled in most cases, but some forms of access such as the Python in operator were overlooked. The severity and risk depend on the application being hosted behind a caching proxy that doesn't ignore responses with cookies, not setting a Cache-Control header to mark pages as private or non-cacheable, and accessing the session in a way that only touches keys without reading values or mutating the session. The issue has been fixed in version 3.1.3.
Publish Date: 2026-02-21
URL: CVE-2026-27205
CVSS 3 Score Details (4.3)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: Required
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: Low
- Integrity Impact: None
- Availability Impact: None
For more information on CVSS3 Scores, click here.
Suggested Fix
Type: Upgrade version
Release Date: 2026-02-21
Fix Resolution: https://github.com/pallets/flask.git - 3.1.3
Step up your Open Source Security Game with Mend here
A simple framework for building complex web applications.
Library home page: https://api.anaconda.org/download/conda-forge/flask/2.2.5/noarch/flask-2.2.5-pyhd8ed1ab_0.conda
Path to dependency file: /environment.yml
Path to vulnerable library: /home/wss-scanner/miniconda3/pkgs/flask-2.2.5-pyhd8ed1ab_0.conda
Found in HEAD commit: 9ea10b6d35753f6a88fc2620fa0543106d490e4a
Vulnerabilities
**In some cases, Remediation PR cannot be created automatically for a vulnerability despite the availability of remediation
Details
Vulnerable Library - flask-2.2.5-pyhd8ed1ab_0.conda
A simple framework for building complex web applications.
Library home page: https://api.anaconda.org/download/conda-forge/flask/2.2.5/noarch/flask-2.2.5-pyhd8ed1ab_0.conda
Path to dependency file: /environment.yml
Path to vulnerable library: /home/wss-scanner/miniconda3/pkgs/flask-2.2.5-pyhd8ed1ab_0.conda
Dependency Hierarchy:
Found in HEAD commit: 9ea10b6d35753f6a88fc2620fa0543106d490e4a
Found in base branch: develop
Vulnerability Details
Flask is a web server gateway interface (WSGI) web application framework. In versions 3.1.2 and below, when the session object is accessed, Flask should set the Vary: Cookie header., resulting in a Use of Cache Containing Sensitive Information vulnerability. The logic instructs caches not to cache the response, as it may contain information specific to a logged in user. This is handled in most cases, but some forms of access such as the Python in operator were overlooked. The severity and risk depend on the application being hosted behind a caching proxy that doesn't ignore responses with cookies, not setting a Cache-Control header to mark pages as private or non-cacheable, and accessing the session in a way that only touches keys without reading values or mutating the session. The issue has been fixed in version 3.1.3.
Publish Date: 2026-02-21
URL: CVE-2026-27205
CVSS 3 Score Details (4.3)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: Required
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: Low
- Integrity Impact: None
- Availability Impact: None
For more information on CVSS3 Scores, click here.Suggested Fix
Type: Upgrade version
Release Date: 2026-02-21
Fix Resolution: https://github.com/pallets/flask.git - 3.1.3
Step up your Open Source Security Game with Mend here