Vulnerability in Open-Emr Openemr
CVE-2026-67611
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.008 (56.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 56.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Affected products
- Open-Emr Openemr
- Openemr — versions 0
Weakness classification (CWE)
References
- jivasecurity.com/writeups/openemr-preauth-disclosure-password-grant (Exploit, technical-description, Third Party Advisory, exploit, Mitigation)
- www.vulncheck.com/advisories/openemr-oauth2-password-grant-authentication-bypas… (Exploit, Third Party Advisory, Mitigation, third-party-advisory)
Frequently asked questions
- What is CVE-2026-67611?
- CVE-2026-67611 is a high-severity vulnerability in Open-Emr Openemr, classified under Use of Single-factor Authentication. CVSS score: 8.1/10. Published 2026-08-03.
- How severe is CVE-2026-67611?
- High severity. CVSS v3 base score is 8.1 out of 10.