Insufficient Session Expiration in OpenEMR - #VU149482
Published: September 14, 2026
Vulnerability identifier: #VU149482
CSH Severity: High
CVSS v4: 8.8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: N/A
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 patient information and perform patient-facing actions.
The vulnerability exists due to failure to enforce one-time token-use restrictions in the OneTimeAuth token-consumption path in src/Common/Auth/OneTimeAuth.php when submitting a captured service_auth token to the patient portal. A remote attacker can replay a valid token to disclose sensitive patient information and perform patient-facing actions.
For PIN-protected flows, exploitation also requires the associated PIN.
Affected software
OpenEMR
Remediation
Install security update from vendor's website.
OpenEMR - update to 8.4.0