{"id":"CVE-2025-23214","aliases":["EUVD-2025-3146","GHSA-5843-2p4f-57fh"],"status":"published","title":"Cosmos userbase checking vulnerability","description":"Cosmos provides users the ability self-host a home server by acting as a secure gateway to your application, as well as a server manager. By monitoring the error code returned in the login, it is possible to figure out whether a user exist or not in the database. Patched in 0.17.7.","severity":{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00657,"percentile":0.51972,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-204"],"published":"2025-01-20T18:09:45Z","modified":"2026-11-11T02:47:47Z","products":[{"vendor":"azukaar","product":"cosmos-server"}],"references":[{"url":"https://github.com/azukaar/Cosmos-Server/security/advisories/GHSA-5843-2p4f-57fh","tags":["x_refsource_CONFIRM","advisory"]},{"url":"https://github.com/azukaar/Cosmos-Server/commit/ef643b4882b0ec074f4021d52583c7c00eac4691","tags":["x_refsource_MISC","fix"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/23xxx/CVE-2025-23214.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-23214","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2025-23214","title":"Cosmos userbase checking vulnerability","description":"Cosmos provides users the ability self-host a home server by acting as a secure gateway to your application, as well as a server manager. By monitoring the error code returned in the login, it is possible to figure out whether a user exist or not in the database. Patched in 0.17.7.","status":"published","published":"2025-01-20T18:09:45.996Z","modified":"2025-02-12T20:41:20.065Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","level":"medium","assessor":"cna"}],"cwes":["CWE-204"],"updated_at":"2026-11-02T14:32:33.082076Z"}],"euvd":[{"id":"EUVD-2025-3146","description":"Cosmos provides users the ability self-host a home server by acting as a secure gateway to your application, as well as a server manager. By monitoring the error code returned in the login, it is possible to figure out whether a user exist or not in the database. Patched in 0.17.7.","status":"published","published":"2025-01-20T18:09:45Z","modified":"2025-02-12T20:41:20Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-03T00:03:56.514594Z"}],"nvd":[{"id":"CVE-2025-23214","description":"Cosmos provides users the ability self-host a home server by acting as a secure gateway to your application, as well as a server manager. By monitoring the error code returned in the login, it is possible to figure out whether a user exist or not in the database. Patched in 0.17.7.","status":"published","published":"2025-01-20T18:15:14.127Z","modified":"2026-06-17T08:52:41.96Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"}],"cwes":["CWE-204"],"updated_at":"2026-11-02T14:10:49.483601Z"}],"osv":[{"id":"CVE-2025-23214","title":"Cosmos userbase checking vulnerability","description":"Cosmos provides users the ability self-host a home server by acting as a secure gateway to your application, as well as a server manager. By monitoring the error code returned in the login, it is possible to figure out whether a user exist or not in the database. Patched in 0.17.7.","status":"published","published":"2025-01-20T18:09:45.996Z","modified":"2026-11-11T10:47:18.977962273Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-204"],"updated_at":"2026-11-11T03:22:28.447808Z"}]}}