CVE-2026-103021
OpenEMR: Username Enumeration via Pre-Authentication User Settings Loading
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.
Fixes and workarounds
Fix
openemr/openemr (composer): GitHub reports patched versions 8.3.0. Check the advisory for the affected release branch.
Source: GitHub GHSA-rr38-hpxq-wwffAffected products and versions
| Product | Versions | Authority |
|---|---|---|
| openemr openemr |
>= 6.0.0, < 8.3.0 (affected) | CNA: GitHub_M |
openemr/openemropenemr/openemr
composer |
>=6.0.0 <=8.3.0 (affected, GitHub advisory range) | GitHub GHSA-rr38-hpxq-wwff |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 3.1 / 5.3 medium |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N | CNA: GitHub_M |
| 3.1 / 5.3 medium |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N | NVD: [email protected] |
Exploit evidence
- https://github.com/openemr/openemr/security/advisories/GHSA-rr38-hpxq-wwff
exploit · ADP: CISA-ADP
References
- https://github.com/openemr/openemr/security/advisories/GHSA-rr38-hpxq-wwffCNA: GitHub_M · x_refsource_CONFIRM
- https://github.com/openemr/openemr/pull/13133CNA: GitHub_M · x_refsource_MISC
- https://github.com/openemr/openemr/commit/50f789fad45ada625fe8d0faf0c7a9c15ef52aa5CNA: GitHub_M · x_refsource_MISC
- https://github.com/openemr/openemr/releases/tag/v8_3_0CNA: GitHub_M · x_refsource_MISC
- https://github.com/openemr/openemr/security/advisories/GHSA-rr38-hpxq-wwffADP: CISA-ADP · exploit
- https://github.com/openemr/openemr/commit/50f789fad45ada625fe8d0faf0c7a9c15ef52aa5[email protected]
- https://github.com/openemr/openemr/pull/13133[email protected]
- https://github.com/openemr/openemr/releases/tag/v8_3_0[email protected]
- https://github.com/openemr/openemr/security/advisories/GHSA-rr38-hpxq-wwff[email protected]
- https://github.com/openemr/openemr/security/advisories/GHSA-rr38-hpxq-wwffGitHub Security Advisories · advisory
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