{"id":"CVE-2026-103021","aliases":[],"cve":{"records":[{"id":"CVE-2026-103021","source":"GitHub_M","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-09-29T21:13:24.031Z","published":"2026-11-05T20:06:36.954Z","modified":"2026-11-09T18:18:18.534Z"}],"publishers":[{"name":"GitHub_M","role":"CNA","organizationId":"a0819718-46f1-4df5-94e2-005712e83aaa","modified":"2026-11-05T20:06:36.954Z"},{"name":"CISA-ADP","role":"ADP","organizationId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","modified":"2026-11-09T18:18:18.534Z"}],"references":[{"url":"https://github.com/openemr/openemr/security/advisories/GHSA-rr38-hpxq-wwff","tags":["x_refsource_CONFIRM"],"source":"GitHub_M"},{"url":"https://github.com/openemr/openemr/pull/13133","tags":["x_refsource_MISC"],"source":"GitHub_M"},{"url":"https://github.com/openemr/openemr/commit/50f789fad45ada625fe8d0faf0c7a9c15ef52aa5","tags":["x_refsource_MISC"],"source":"GitHub_M"},{"url":"https://github.com/openemr/openemr/releases/tag/v8_3_0","tags":["x_refsource_MISC"],"source":"GitHub_M"},{"url":"https://github.com/openemr/openemr/security/advisories/GHSA-rr38-hpxq-wwff","tags":["exploit"],"source":"CISA-ADP"}],"weaknesses":[{"id":"CWE-200","description":"CWE-200: Exposure of Sensitive Information to an Unauthorized Actor","source":"GitHub_M"},{"id":"CWE-203","description":"CWE-203: Observable Discrepancy","source":"GitHub_M"},{"id":"CWE-208","description":"CWE-208: Observable Timing Discrepancy","source":"GitHub_M"}],"applicability":[],"prioritization":[{"source":"CISA-ADP","type":"SSVC","role":"CISA Coordinator","timestamp":"2026-11-09T18:16:48.236159Z","decisions":[{"name":"Exploitation","value":"poc"},{"name":"Automatable","value":"yes"},{"name":"Technical Impact","value":"partial"}]}]},"title":"OpenEMR: Username Enumeration via Pre-Authentication User Settings Loading","titleSource":"GitHub_M","descriptionSource":"GitHub_M","description":"OpenEMR is a free and open source electronic health records and medical practice management application. From 6.0.0 until 8.3.0, interface/globals.php uses the unauthenticated authUser login parameter to populate temp_authuserid and load that account's user_settings before authentication succeeds. Existing usernames can therefore cause an additional database query and may apply visible customized settings, while nonexistent usernames skip that behavior. A remote unauthenticated actor can use timing or page differences to enumerate valid accounts for later credential attacks. This issue is fixed in version 8.3.0.","score":5.3,"severity":"medium","published":"2026-11-05T20:06:36.954Z","modified":"2026-11-09T18:18:18.534Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"openemr","name":"openemr","platforms":[],"versions":[{"version":">= 6.0.0, < 8.3.0","status":"affected"}],"cpes":[],"source":"GitHub_M","url":"https://www.cve.org/CVERecord?id=CVE-2026-103021"}],"remediation":[],"references":["https://github.com/openemr/openemr/security/advisories/GHSA-rr38-hpxq-wwff","https://github.com/openemr/openemr/pull/13133","https://github.com/openemr/openemr/commit/50f789fad45ada625fe8d0faf0c7a9c15ef52aa5","https://github.com/openemr/openemr/releases/tag/v8_3_0"],"sources":[{"name":"CVE","id":"CVE-2026-103021","modified":"2026-11-09T18:18:18.534Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-103021"}],"assessments":[{"source":"GitHub_M","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","score":5.3}],"sourceAffected":[],"observedAt":"2026-11-09T19:13:32.887Z","kev":{"status":"not-listed","checkedAt":"2026-11-15T01:35:32.051Z"},"coverage":[{"source":"NVD","status":"available","checkedAt":"2026-11-09T19:20:33.891Z","attemptedAt":"2026-11-09T19:20:33.891Z"},{"source":"GHSA","status":"no-result","checkedAt":"2026-11-09T19:20:34.058Z","attemptedAt":"2026-11-09T19:20:34.058Z"},{"source":"EUVD","status":"available","checkedAt":"2026-11-09T19:20:33.822Z","attemptedAt":"2026-11-09T19:20:33.822Z"},{"source":"EPSS","status":"available","checkedAt":"2026-11-09T19:20:34.717Z","attemptedAt":"2026-11-09T19:20:34.717Z"}],"evidence":[{"source":"ENISA EUVD","id":"EUVD-2026-117778","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-117778","modified":"Nov 9, 2026, 6:18:18 PM","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","checkedAt":"2026-11-09T19:20:33.822Z"},{"source":"NVD","id":"CVE-2026-103021","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-103021","modified":"2026-11-09T19:16:39.190","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","checkedAt":"2026-11-09T19:20:33.891Z"},{"source":"FIRST EPSS","id":"CVE-2026-103021","url":"https://www.first.org/epss/","probability":0.00345,"percentile":0.28298,"date":"2026-11-09","checkedAt":"2026-11-09T19:20:34.717Z"}],"aiSummary":{"text":"OpenEMR versions 6.0.0 to 8.3.0 are affected by a username enumeration vulnerability. A remote unauthenticated actor can use timing or page differences to identify valid accounts. This issue is related to the loading of user settings before authentication.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-11-06T03:01:06.484Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-103021"}]}}