{"cve":"CVE-2025-43866","nvd":{"published":"2025-06-12T18:15:20.713","modified":"2026-06-17T09:24:40.323","status":"Analyzed","description":"vantage6 is an open-source infrastructure for privacy preserving analysis. The JWT secret key in the vantage6 server is auto-generated unless defined by the user. The auto-generated key is a UUID1, which is not cryptographically secure as it is predictable to some extent. This vulnerability is fixed in 4.11.0.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U","score":1.7},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","score":7.5},"cwes":["CWE-330"],"references":["https://github.com/vantage6/vantage6/security/advisories/GHSA-m3mq-f375-5vgh"],"products":["vantage6:vantage6"],"source":"nvd","synced_at":"2026-10-19T22:02:23.998251710+00:00"},"epss":{"cve":"CVE-2025-43866","score":0.00387,"percentile":0.32845,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-m3mq-f375-5vgh","url":"https://osv.dev/vulnerability/GHSA-m3mq-f375-5vgh","summary":"Vantage6 Server JWT secret not cryptographically secure","modified":"2026-06-08T20:00:14.501316550Z","packages":[{"ecosystem":"PyPI","name":"vantage6-server","purl":"pkg:pypi/vantage6-server","ranges":["<4.11.0"],"fixed":["4.11.0"]}]},{"id":"PYSEC-2025-221","url":"https://osv.dev/vulnerability/PYSEC-2025-221","summary":"","modified":"2026-05-20T09:19:21.163912Z","packages":[{"ecosystem":"PyPI","name":"vantage6-server","purl":"pkg:pypi/vantage6-server","ranges":["<4.11.0"],"fixed":["4.11.0"]}]}],"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."]}