{"id":"CVE-2025-43866","summary":"Vantage6 Server JWT secret not cryptographically secure","details":"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.","aliases":["GHSA-m3mq-f375-5vgh","PYSEC-2025-221"],"modified":"2026-05-20T08:11:26.545794604Z","published":"2025-06-12T18:04:57.649Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/43xxx/CVE-2025-43866.json","cna_assigner":"GitHub_M","cwe_ids":["CWE-330"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/43xxx/CVE-2025-43866.json"},{"type":"ADVISORY","url":"https://github.com/vantage6/vantage6/security/advisories/GHSA-m3mq-f375-5vgh"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-43866"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/vantage6/vantage6","events":[{"introduced":"0"},{"fixed":"5ee1ecbf44525a8221d528743e0832912591b248"}]}],"versions":["v3.4.0","v3.4.0a2","v3.4.0a3","v3.4.0a4","v3.4.0a6","v3.4.1","v3.4.1a0","v3.4.1a1","v3.4.1a2","v3.4.1a3","v3.4.2","v3.4.2a0","v3.4.3","v3.5.0","v3.5.0rc2","v3.5.0rc3","v3.5.1","v3.5.2","v3.6.1","v3.6.1rc1","v3.6.1rc2","v3.6.1rc3","v3.7.0","v3.7.0rc1","v3.7.0rc2","v3.7.1","v3.7.2","v3.7.3","v3.8.0rc2","v3.8.0rc3","version/0.0.0b3","version/3.10.0","version/3.10.1","version/3.10.2","version/3.10.3","version/3.10.4","version/3.3.0","version/3.3.0rc1","version/3.3.0rc2","version/3.3.0rc3","version/3.3.0rc4","version/3.3.1","version/3.3.2","version/3.3.3","version/3.3.4","version/3.3.5","version/3.3.6","version/3.3.7","version/3.3.8a1","version/3.3.8a2","version/3.3.8a3","version/3.3.8a4","version/3.3.8a5","version/3.3.8a6","version/3.3.8a7","version/3.3.8a8","version/3.3.8a9","version/3.4.0","version/3.4.0a0","version/3.4.0a1","version/3.4.0a2","version/3.4.0a3","version/3.4.0a4","version/3.4.0a5","version/3.4.0a6","version/3.4.1","version/3.4.1a0","version/3.4.1a1","version/3.4.1a2","version/3.4.1a3","version/3.4.2","version/3.4.2a0","version/3.4.3","version/3.5.0","version/3.5.0rc2","version/3.5.0rc3","version/3.5.1","version/3.5.2","version/3.6.1","version/3.6.1rc1","version/3.6.1rc2","version/3.6.1rc3","version/3.7.0","version/3.7.0rc1","version/3.7.0rc2","version/3.7.1","version/3.7.2","version/3.7.3","version/3.8.0rc2","version/3.8.0rc3","version/3.9.0","version/3.9.0rc1","version/3.9.0rc2","version/3.9.0rc3","version/3.9.0rc4","version/4.0.3","version/4.1.0","version/4.1.1","version/4.1.2","version/4.1.3","version/4.11.0rc1","version/4.11.0rc2","version/4.11.0rc3","version/4.11.0rc4","version/4.2.2","version/4.2.3","version/4.3.2","version/4.5.1","version/4.5.2","version/4.5.5"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-43866.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"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"}]}