{"id":"CVE-2025-24023","aliases":["GHSA-p8q5-cvwx-wvwp","PYSEC-2025-15"],"title":"Flask-AppBuilder Observable Response Discrepancy","summary":"Flask-AppBuilder Observable Response Discrepancy","severity":"low","cvss":3.7,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N","vendor":"flask-appbuilder","product":"flask-appbuilder","ecosystem":"pip","affected":["flask-appbuilder < 4.5.3"],"patched":["flask-appbuilder 4.5.3"],"published":"2025-03-03","updated":"2026-09-10","sourceUpdated":"2026-09-10T03:49:48.433021837Z","source":"OSV","sourceUrl":"https://osv.dev/vulnerability/GHSA-p8q5-cvwx-wvwp","references":[{"url":"https://github.com/dpgaspar/Flask-AppBuilder/security/advisories/GHSA-p8q5-cvwx-wvwp"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-24023"},{"url":"https://github.com/dpgaspar/Flask-AppBuilder"},{"url":"https://github.com/pypa/advisory-database/tree/main/vulns/flask-appbuilder/PYSEC-2025-15.yaml"}],"tags":["osv","pip"],"epss":0.00325,"epssPercentile":0.25869,"ingestedAt":"2026-09-12T03:13:01.715Z","slug":"CVE-2025-24023","body":"## Overview\n\n### Impact\nUser 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.\n\n### Patches\n\nUpgrade to flask-appbuilder>=4.5.3\n\n### Workarounds\nDowngrade werkzeug to <3.0.0\n\n### References\n_Are there any links users can visit to find out more?_\n\n## Affected packages\n\n- `flask-appbuilder < 4.5.3`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `flask-appbuilder 4.5.3`","depth":"sunlit","depthScore":20,"depthScoreParts":{"impact":20.4,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}