{"id":"CVE-2025-24023","summary":"Observable Response Discrepancy in flask-appbuilder","details":"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.","aliases":["GHSA-p8q5-cvwx-wvwp","PYSEC-2025-15"],"modified":"2026-08-12T03:30:43.960775888Z","published":"2025-03-03T15:25:55.437Z","database_specific":{"cwe_ids":["CWE-204"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/24xxx/CVE-2025-24023.json","cna_assigner":"GitHub_M"},"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"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/dpgaspar/flask-appbuilder","events":[{"introduced":"0"},{"fixed":"df0ac1dbe70e3b016d199366a051a79ee916db02"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"4.5.3"}],"source":["AFFECTED_FIELD","CPE_RANGE"],"cpe":"cpe:2.3:a:dpgaspar:flask-appbuilder:*:*:*:*:*:*:*:*"}}],"versions":["v4.5.2","v4.5.1","v4.5.0","v4.4.1","v4.4.0","v4.3.11","v4.3.10","v4.3.9","v4.3.8","v4.3.7","v4.3.6","v4.3.5","v4.3.4","v4.3.3","v4.3.2","v4.3.1","v4.3.0","v4.2.1","v4.2.0","v4.1.6","v4.1.5","v4.1.4","v4.1.3","v4.1.2","v4.1.1","v4.1.0","v4.0.0","v3.4.5","v3.4.4","v3.4.3","v3.4.2","v3.4.1","v3.4.0","v3.3.4","v3.3.3","v3.3.2","v3.3.1","v3.3.0","v3.2.3","v3.2.2","v3.2.1","v3.2.0","3.1.1","v3.1.1","v3.1.0","v3.0.1","v3.0.0","v2.3.4","v2.3.3","v2.3.2","v2.3.1","v2.3.0","v2.2.3","v2.2.2","v2.2.1","v2.2.1rc1","v2.2.0","v2.1.13","v2.1.12","v2.1.11","v2.1.10","v2.1.9","v2.1.8","v2.1.7","v2.1.6","v2.1.5","v2.1.4","v1.13.0","v2.1.3","v2.1.2","v2.1.1","v2.1.0","v2.0.0","v1.12.5","v1.12.4","v1.12.3","v1.12.2","v1.12.1","v1.9.6","v1.12.0","v1.11.1","v1.11.0","v1.10.0","v1.9.5","v1.9.4","v1.9.3","v1.9.2","v1.9.1","v1.9.0","v1.8.1"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-24023.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N"}]}