CVE-2025-24023: Flask-AppBuilder Observable Response Discrepancy

CVE-2025-24023 · Severity: low · CVSS 3.1 · Published 2025-03-03

Flask-AppBuilder is an application development framework. Prior to 4.5.3, Flask-AppBuilder allows unauthenticated users to enumerate existing usernames by timing the response time from the server when brute forcing requests to login. This vulnerability is fixed in 4.5.3.

Technologies: flask-appbuilder (PyPI). Vendors: PyPI.

Quick answers

Is CVE-2025-24023 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2025-24023 being exploited in the wild.
How severe is CVE-2025-24023?
Low severity, with a CVSS score of 3.1, published 3 March 2025.
Which products and versions are affected?
flask-appbuilder (PyPI) ECOSYSTEM:introduced=0,fixed=4.5.3.
Is there a fix for CVE-2025-24023?
Yes. flask-appbuilder (PyPI): upgrade to 4.5.3 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2025-24023?
Check whether you run flask-appbuilder (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • flask-appbuilder (PyPI): upgrade to 4.5.3 or later
    pip install "flask-appbuilder>=4.5.3"

Affected products

  • flask-appbuilder (PyPI) ECOSYSTEM:introduced=0,fixed=4.5.3

Identifiers

  • CVE-2025-24023
  • GHSA-p8q5-cvwx-wvwp
  • PYSEC-2025-15

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