CVE-2026-126454

EUVD-2026-124969
OpenEMR before 8.5.0 lacks rate limiting or lockout on TOTP submission, allowing attackers with a valid password to brute-force the 6-digit MFA code. Attackers can script repeated POST requests to main_screen.php or the OAuth2 authorization flow with re-submitted hidden credentials to bypass two-factor authentication.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
8.1 HIGH
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: 41.59%
Common Weakness Enumeration
References
https://github.com/openemr/openemr/security/advisories/GHSA-rp7c-25mm-8g74
https://www.vulncheck.com/advisories/openemr-before-8.5.0-totp-brute-force-via-main-screen-php-and-oauth2