{"cve":"CVE-2024-21671","nvd":{"published":"2024-01-30T16:15:48.090","modified":"2026-06-17T07:09:57.830","status":"Modified","description":"The vantage6 technology enables to manage and deploy privacy enhancing technologies like Federated Learning (FL) and Multi-Party Computation (MPC).  It is possible to find out usernames from the response time of login requests. This could aid attackers in credential attacks.  Version 4.2.0 patches this vulnerability.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N","score":3.7},"cwes":["CWE-203","CWE-208"],"references":["https://github.com/vantage6/vantage6/commit/389f416c445da4f2438c72f34c3b1084485c4e30","https://github.com/vantage6/vantage6/security/advisories/GHSA-45gq-q4xh-cp53","https://github.com/vantage6/vantage6/commit/389f416c445da4f2438c72f34c3b1084485c4e30","https://github.com/vantage6/vantage6/security/advisories/GHSA-45gq-q4xh-cp53"],"products":["vantage6:vantage6"],"source":"nvd","synced_at":"2026-10-19T21:44:57.175229480+00:00"},"epss":{"cve":"CVE-2024-21671","score":0.00401,"percentile":0.34398,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-45gq-q4xh-cp53","url":"https://osv.dev/vulnerability/GHSA-45gq-q4xh-cp53","summary":"vantage6 vulnerable to username timing attack","modified":"2026-07-07T17:57:01.554426828Z","packages":[{"ecosystem":"PyPI","name":"vantage6-server","purl":"pkg:pypi/vantage6-server","ranges":["<4.2.0"],"fixed":["4.2.0"]}]},{"id":"PYSEC-2024-31","url":"https://osv.dev/vulnerability/PYSEC-2024-31","summary":"","modified":"2026-07-07T17:57:01.554426828Z","packages":[{"ecosystem":"PyPI","name":"vantage6","purl":"pkg:pypi/vantage6","ranges":["<4.2.0"],"fixed":["4.2.0"]}]},{"id":"PYSEC-2026-2008","url":"https://osv.dev/vulnerability/PYSEC-2026-2008","summary":"vantage6 vulnerable to username timing attack","modified":"2026-07-07T17:57:01.554426828Z","packages":[{"ecosystem":"PyPI","name":"vantage6-server","purl":"pkg:pypi/vantage6-server","ranges":["<4.2.0"],"fixed":["4.2.0"]}]}],"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."]}