CVE-2022-21659

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.

• CWE-203
• CWE-203

• https://github.com/dpgaspar/Flask-AppBuilder/pull/1775Patch, Third Party Advisory
• https://github.com/dpgaspar/Flask-AppBuilder/security/advisories/GHSA-wfjw-w6pv-8p7fThird Party Advisory
• https://github.com/dpgaspar/Flask-AppBuilder/pull/1775Patch, Third Party Advisory
• https://github.com/dpgaspar/Flask-AppBuilder/security/advisories/GHSA-wfjw-w6pv-8p7fThird Party Advisory

Published

Jan 31, 2022

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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