Incorrect Comparison in OpenEMR - #VU149484
Published: September 14, 2026
Vulnerability identifier: #VU149484
CSH Severity: Low
CVSS v4: 6.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-697
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to bypass PIN verification and disclose patient information.
The vulnerability exists due to improper comparison in OneTimeAuth.php::processOnetime() when validating a submitted login PIN. A remote attacker can submit a crafted numeric representation of a PIN to bypass PIN verification and disclose patient information.
Exploitation requires knowledge of the PIN's numeric value or a side channel indicating that the PIN begins with zero.
Affected software
OpenEMR
Remediation
Install security update from vendor's website.
OpenEMR - update to 8.4.0