Insufficient Session Expiration in OpenEMR - CVE-2026-25476
Published: April 23, 2026
Vulnerability identifier: #VU127283
CSH Severity: Medium
CVSS v4: 8.7 [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]
CVE-ID: CVE-2026-25476
CWE-ID: CWE-613
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
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.
Affected software
OpenEMR
How to mitigate CVE-2026-25476
Install security update from vendor's website.
OpenEMR - update to 8.0.0