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.
References (3)
Core 3
Core References
Third Party Advisory x_refsource_confirm
https://github.com/dpgaspar/Flask-AppBuilder/security/advisories/GHSA-m3rf-7m4w-r66q
Patch, Third Party Advisory x_refsource_misc
https://github.com/dpgaspar/Flask-AppBuilder/commit/eba517aab121afa3f3f2edb011ec6bc4efd61fbc
Release Notes, Third Party Advisory x_refsource_misc
https://github.com/dpgaspar/Flask-AppBuilder/releases/tag/v3.3.4
Scores
CVSS v3
8.1
EPSS
0.0033
EPSS Percentile
55.7%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Details
CWE
CWE-287
Status
published
Products (2)
dpgaspar/flask-appbuilder
< 3.3.4
pypi/Flask-AppBuilder
0 - 3.3.4PyPI
Published
Dec 09, 2021
Tracked Since
Feb 18, 2026