CVE-2026-103021: medium-severity vulnerability in openemr
OpenEMR: Username Enumeration via Pre-Authentication User Settings Loading
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.3epss 0.3%
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Affected products
openemr · openemrRelated CVEs — openemr
In the same product, most dangerous first.
CVE-2025-31121HIGHOpenEMR allows XSS in Patient Image featureEPSS 17.3%CVE-2025-43860HIGHOpemEMR Vulnerable to Stored XSS Attack in the Additional Address Section of Patient DemographicsEPSS 15.0%CVE-2025-30161HIGHOpenEMR Stored XSS in OpenEMR Bronchitis FormEPSS 10.9%CVE-2025-32794HIGHOpenEMR Stored XSS via Patient Name Field in Procedure OrdersEPSS 10.5%CVE-2026-24848HIGHOpenEMR Arbitrary File Write leading to Remote Code ExecutionEPSS 7.2%CVE-2025-69231HIGHOpenEMR has a Stored XSS in GAD-7 Form that Enables Session Hijacking and Privilege EscalationEPSS 4.1%