Insufficient Session Expiration in OpenEMR - CVE-2026-25476
Published: April 23, 2026
Vulnerability identifier: #VU127283
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-25476
CWE-ID: CWE-613
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: OpenEMR
Affected software:
OpenEMR
OpenEMR
Detailed vulnerability description
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to insufficient session expiration in library/auth.inc.php when handling requests that include the skip_timeout_reset parameter. A remote attacker can send a request with skip_timeout_reset=1 using a stolen session cookie to disclose sensitive information.
Exploitation requires a valid session cookie and affects deployments with session timeout enabled.
How to mitigate CVE-2026-25476
Install security update from vendor's website.