CVE-2026-67611
HIGHDescription
OpenEMR through 8.2.0 contains an authentication bypass vulnerability that allows attackers with valid credentials to circumvent multi-factor authentication by exploiting the exposed OAuth2 password grant flow through an unauthenticated client registration endpoint. Attackers can register an OAuth2 client via the unauthenticated registration endpoint and use the password grant to exchange credentials for an API access token, bypassing the normal web interface authentication and any enforced multi-factor authentication controls.
How to fix
No published remediation has been found for this vulnerability's affected products yet.
Mitigation guidance may be in the linked vendor advisories in the References section below.
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CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Exploit Intelligence
EPSS data unavailable for this CVE.
References
Related Vulnerabilities
Other CWE-308 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2023-49075 | High | 8.4 | 1.4% | - | Fix |
| CVE-2023-25681 | Medium | 5.3 | 0.6% | - | - |
| CVE-2026-56022 | Medium | 5.3 | 0.5% | - | - |
| CVE-2025-42959 | High | 8.1 | 0.5% | - | - |
| CVE-2023-50934 | Medium | 5.3 | 0.4% | - | - |
| CVE-2024-47652 | High | 8.1 | 0.4% | - | Fix |
Common questions
How do I fix CVE-2026-67611?
No published fix for CVE-2026-67611 has been found yet. Check the linked vendor advisories for guidance as it becomes available.
How severe is CVE-2026-67611?
CVE-2026-67611 has a CVSS v3 base score of 8.1, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-08-03.