CVE-2026-103021

MediumCVSS 5.3/10Last modified Nov 10, 2026

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.

Metrics

CVSS 3.1 5.3/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Weakness enumeration

CWE-200 CWE-203 CWE-208

Affected software

Vendor	Product	Versions
openemr	openemr	>= 6.0.0, < 8.3.0

References

https://github.com/openemr/openemr/commit/50f789fad45ada625fe8d0faf0c7a9c15ef52aa5Patch
https://github.com/openemr/openemr/pull/13133Issue Tracking, Patch
https://github.com/openemr/openemr/releases/tag/v8_3_0Product, Release Notes
https://github.com/openemr/openemr/security/advisories/GHSA-rr38-hpxq-wwffExploit, Mitigation, Vendor Advisory
https://github.com/openemr/openemr/security/advisories/GHSA-rr38-hpxq-wwffExploit, Mitigation, Vendor Advisory

Timeline

Published: Nov 5, 2026
Last modified: Nov 10, 2026
NVD status: Analyzed

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