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OpenAdvisories
Medium · 5.3 CVE-2022-21659 EUVD-2022-0103GHSA-wfjw-w6pv-8p7fPYSEC-2022-24

Observable Response Discrepancy in Flask-AppBuilder

Published Jan 31, 2022 · Updated May 5, 2025 · Assigned by GitHub_M

Description

Flask-AppBuilder is an application development framework, built on top of the Flask web framework. In affected versions there exists a user enumeration vulnerability. This vulnerability allows for a non authenticated user to enumerate existing accounts by timing the response time from the server when you are logging in. Users are advised to upgrade to version 3.4.4 as soon as possible. There are no known workarounds for this issue.

Affected packages

EcosystemPackageAffectedFixedRecord
PyPI flask-appbuilder < 3.4.4 3.4.4 GHSA-wfjw-w6pv-8p7f
PyPI flask-appbuilder < 3.4.2 3.4.2 PYSEC-2022-24

References