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CVE-2021-41265

8.1 · HIGH

Flask-AppBuilder is a development framework built on top of Flask.

Published Dec 9, 2021CWE-287EPSS 1.32%

Overview

CVE-2021-41265 is a high-severity vulnerability. It was published on December 9, 2021 and has a CVSS 3.1 base score of 8.1 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

Flask-AppBuilder is a development framework built on top of Flask. Verions prior to 3.3.4 contain an improper authentication vulnerability in the REST API. The issue allows for a malicious actor with a carefully crafted request to successfully authenticate and gain access to existing protected REST API endpoints. This only affects non database authentication types and new REST API endpoints. Users should upgrade to Flask-AppBuilder 3.3.4 to receive a patch.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/dpgaspar/Flask-AppBuilder/commit/eba517aab121afa3f3f2edb011ec6bc4efd61fbcGitHubgithub.com/dpgaspar/Flask-AppBuilder/releases/tag/v3.3.4GitHubgithub.com/dpgaspar/Flask-AppBuilder/security/advisories/GHSA-m3rf-7m4w-r66qGitHubgithub.com/dpgaspar/Flask-AppBuilder/commit/eba517aab121afa3f3f2edb011ec6bc4efd61fbcGitHubgithub.com/dpgaspar/Flask-AppBuilder/releases/tag/v3.3.4GitHubgithub.com/dpgaspar/Flask-AppBuilder/security/advisories/GHSA-m3rf-7m4w-r66q

How CyberStrike helps

Frequently asked questions

What is CVE-2021-41265?

CVE-2021-41265 is a high-severity vulnerability. It was published on December 9, 2021 and has a CVSS 3.1 base score of 8.1 (HIGH).

How severe is CVE-2021-41265?

This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2021-41265?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2021-41265?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-41265 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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