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Flask-AppBuilder Observable Response Discrepancy

Low severity GitHub Reviewed Published Mar 3, 2025 in dpgaspar/Flask-AppBuilder • Updated Mar 3, 2025

Package

pip flask-appbuilder (pip)

Affected versions

< 4.5.3

Patched versions

4.5.3

Description

Impact

User enumeration in database authentication in Flask-AppBuilder <= 4.5.3 and werkzeug >= 3.0.0. Allows for a non authenticated user to enumerate existing usernames by timing the response time from the server when brute forcing requests to login.

Patches

Upgrade to flask-appbuilder>=4.5.3

Workarounds

Downgrade werkzeug to <3.0.0

References

Are there any links users can visit to find out more?

References

@dpgaspar dpgaspar published to dpgaspar/Flask-AppBuilder Mar 3, 2025
Published to the GitHub Advisory Database Mar 3, 2025
Reviewed Mar 3, 2025
Published by the National Vulnerability Database Mar 3, 2025
Last updated Mar 3, 2025

Severity

Low

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(20th percentile)

Weaknesses

CVE ID

CVE-2025-24023

GHSA ID

GHSA-p8q5-cvwx-wvwp

Source code

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