{"id":"CVE-2025-24023","aliases":["GHSA-p8q5-cvwx-wvwp","PYSEC-2025-15"],"url":"https://o3.security/vulnerability/CVE-2025-24023","summary":"Observable Response Discrepancy in flask-appbuilder","details":"### 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?_","published":"2025-03-03T15:25:55.437Z","modified":"2026-08-12T03:51:37.929495336Z","cvss":{"score":3.7,"severity":"LOW","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"flask-appbuilder","fixedVersion":"4.5.3"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/24xxx/CVE-2025-24023.json"},{"type":"ADVISORY","url":"https://github.com/dpgaspar/Flask-AppBuilder/security/advisories/GHSA-p8q5-cvwx-wvwp"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-24023"},{"type":"PACKAGE","url":"https://github.com/dpgaspar/Flask-AppBuilder"},{"type":"WEB","url":"https://github.com/pypa/advisory-database/tree/main/vulns/flask-appbuilder/PYSEC-2025-15.yaml"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:37.929495336Z"}}