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  5. CVE-2021-41265

CVE-2021-41265: Improper Authentication in Flask-AppBuilder

December 9, 2021 (updated March 7, 2025)

Improper authentication on the REST API. Allows for a malicious actor with a carefully crafted request to successfully authenticate and gain access to existing protected REST API endpoints. Only affects non database authentication types, and new REST API endpoints.

References

  • github.com/advisories/GHSA-m3rf-7m4w-r66q
  • github.com/dpgaspar/Flask-AppBuilder
  • github.com/dpgaspar/Flask-AppBuilder/commit/eba517aab121afa3f3f2edb011ec6bc4efd61fbc
  • github.com/dpgaspar/Flask-AppBuilder/releases/tag/v3.3.4
  • github.com/dpgaspar/Flask-AppBuilder/security/advisories/GHSA-m3rf-7m4w-r66q
  • github.com/pypa/advisory-database/tree/main/vulns/flask-appbuilder/PYSEC-2021-851.yaml
  • nvd.nist.gov/vuln/detail/CVE-2021-41265

Code Behaviors & Features

Detect and mitigate CVE-2021-41265 with GitLab Dependency Scanning

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Affected versions

All versions before 3.3.4

Fixed versions

  • 3.3.4

Solution

Upgrade to version 3.3.4 or above.

Impact 8.1 HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Learn more about CVSS

Weakness

  • CWE-287: Improper Authentication

Source file

pypi/Flask-AppBuilder/CVE-2021-41265.yml

Spotted a mistake? Edit the file on GitLab.

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