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  5. CVE-2022-21659

CVE-2022-21659: Observable Response Discrepancy in Flask-AppBuilder

February 1, 2022 (updated March 7, 2025)

User enumeration in database authentication in Flask-AppBuilder < 3.4.4. Allows for a non authenticated user to enumerate existing accounts by timing the response time from the server when you are logging in.

References

  • github.com/advisories/GHSA-wfjw-w6pv-8p7f
  • github.com/dpgaspar/Flask-AppBuilder
  • github.com/dpgaspar/Flask-AppBuilder/commit/e2b744c258ff62ece9d5ac7172c3b4644ff4c2fe
  • github.com/dpgaspar/Flask-AppBuilder/commits/v3.4.4
  • github.com/dpgaspar/Flask-AppBuilder/pull/1775
  • github.com/dpgaspar/Flask-AppBuilder/security/advisories/GHSA-wfjw-w6pv-8p7f
  • github.com/pypa/advisory-database/tree/main/vulns/flask-appbuilder/PYSEC-2022-24.yaml
  • nvd.nist.gov/vuln/detail/CVE-2022-21659

Code Behaviors & Features

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Affected versions

All versions before 3.4.4

Fixed versions

  • 3.4.4

Solution

Upgrade to version 3.4.4 or above.

Impact 5.3 MEDIUM

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

Learn more about CVSS

Weakness

  • CWE-203: Observable Discrepancy
  • CWE-204: Observable Response Discrepancy

Source file

pypi/Flask-AppBuilder/CVE-2022-21659.yml

Spotted a mistake? Edit the file on GitLab.

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