CVE-2026-25476
HIGHCVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Lifecycle Timeline
4Description
OpenEMR is a free and open source electronic health records and medical practice management application. Prior to version 8.0.0, the session expiration check in `library/auth.inc.php` runs only when `skip_timeout_reset` is not present in the request. When `skip_timeout_reset=1` is sent, the entire block that calls `SessionTracker::isSessionExpired()` and forces logout on timeout is skipped. As a result, any request that includes this parameter (e.g. from auto-refresh pages like the Patient Flow Board) never runs the expiration check: expired sessions can continue to access data indefinitely, abandoned workstations stay active, and an attacker with a stolen session cookie can keep sending `skip_timeout_reset=1` to avoid being logged out. Version 8.0.0 fixes the issue.
Analysis
OpenEMR prior to version 8.0.0 fails to enforce session expiration when the skip_timeout_reset parameter is present in requests, allowing expired sessions to remain active indefinitely. An attacker with a stolen session cookie can exploit this by continuously sending the skip_timeout_reset parameter to maintain unauthorized access to sensitive health records without being logged out. …
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Remediation
Within 24 hours: Inventory all OpenEMR instances and identify those running versions prior to 8.0.0. Within 7 days: Apply the available vendor patch to upgrade to version 8.0.0 or later across all affected systems. …
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