What’s Vulnerable › Vulnerabilities
CVE-2025-24023: Observable Response Discrepancy in flask-appbuilder
- Severity: medium (CVSS 5.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2025-03-03 · updated 2026-06-17
- Weakness: CWE-204
Description
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.
Affected products
- dpgaspar Flask-AppBuilder: before 4.5.3 — fixed in 4.5.3
How to fix
Upgrade to a fixed version: dpgaspar Flask-AppBuilder 4.5.3. Check the vendor advisory for mitigations.
References
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