Authorization bypass through user-controlled key in OpenEMR - CVE-2026-25220
Published: April 23, 2026
Vulnerability identifier: #VU127279
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-25220
CWE-ID: CWE-639
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: OpenEMR
Affected software:
OpenEMR
OpenEMR
Detailed vulnerability description
The vulnerability allows a remote user to disclose sensitive information.
The vulnerability exists due to improper access control in the Message Center message listing functionality when handling a request with the show_all=yes URL parameter. A remote user can send a crafted request to disclose sensitive information.
The issue exposes internal messages belonging to other users, including patient-related notes and staff communications.
How to mitigate CVE-2026-25220
Install security update from vendor's website.