Medium severity · published Mar 19, 2026
CVE-2026-33305
OpenEMR has Authorization Bypass in FaxSMS AppDispatch Constructor
5.4
CVSS
0.2%
EPSS
No
On KEV
Description
OpenEMR is a free and open source electronic health records and medical practice management application. Prior to 8.0.0.2, an authorization bypass in the optional FaxSMS module (`oe-module-faxsms`) allows any authenticated OpenEMR user to invoke controller methods — including `getNotificationLog()`, which returns patient appointment data (PHI) — regardless of whether they hold the required ACL permissions. The `AppDispatch` constructor dispatches user-controlled actions and exits the process before any calling code can enforce ACL checks. Version 8.0.0.2 fixes the issue.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 12% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OP
openemr · openemr
< 8.0.0.2 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-33305
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-33305
Patch
https://github.com/openemr/openemr/commit/edb65936e259b2625e8eea4628316c4577cb2a11
Exploit
https://github.com/openemr/openemr/security/advisories/GHSA-r973-h5cq-35rc
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