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.
What this means for your business
- It affects Open-Emr Openemr. It matters if your company, or a supplier that handles your data, runs it.
- Code showing how to exploit it has been published, but real attacks have not been confirmed.
- An attacker can use it remotely, over a network, with an ordinary user login, and without anyone at your company clicking anything.
- FIRST's prediction model gives it a 0.8% chance of attack attempts being seen in the next 30 days, ranking above 54% of all known flaws.
What to do
- 1Check whether your company or your suppliers run Open-Emr Openemr, and which version. The affected versions are listed further down this page.
- 2If you do, follow the vendor's guidance. No patch reference has been published yet.
Fastnexa security experts
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Scoring
- CVSS
- 8.1 (v3.1)
- Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N- CVSS v4
- 8.6
- Weakness
- CWE-308
- Assigned by
- disclosure@vulncheck.com
Dates
- Published
- 2026-08-03
- Last modified
- 2026-09-01
- Sources
- NVD
Affected products
- Open-Emr Openemr- 8.2.0
As listed in the NVD configuration data. Not a statement about your estate.