{"cve":"CVE-2025-24023","nvd":{"published":"2025-03-03T16:15:41.820","modified":"2026-06-17T08:57:54.450","status":"Analyzed","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","score":5.3},"cwes":["CWE-204","CWE-203"],"references":["https://github.com/dpgaspar/Flask-AppBuilder/security/advisories/GHSA-p8q5-cvwx-wvwp"],"products":["dpgaspar:flask-appbuilder"],"source":"nvd","synced_at":"2026-10-19T21:59:48.811064707+00:00"},"epss":{"cve":"CVE-2025-24023","score":0.00332,"percentile":0.26413,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-p8q5-cvwx-wvwp","url":"https://osv.dev/vulnerability/GHSA-p8q5-cvwx-wvwp","summary":"Flask-AppBuilder Observable Response Discrepancy","modified":"2026-09-10T03:49:48.433021837Z","packages":[{"ecosystem":"PyPI","name":"flask-appbuilder","purl":"pkg:pypi/flask-appbuilder","ranges":["<4.5.3"],"fixed":["4.5.3"]}]},{"id":"PYSEC-2025-15","url":"https://osv.dev/vulnerability/PYSEC-2025-15","summary":"","modified":"2025-04-09T17:59:13.715799Z","packages":[{"ecosystem":"PyPI","name":"flask-appbuilder","purl":"pkg:pypi/flask-appbuilder","ranges":["<4.5.3"],"fixed":["4.5.3"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}