Medium severity · published Mar 25, 2026
CVE-2026-33931
OpenEMR has IDOR in Portal Payment Page that Allows Cross-Patient Record Access
6.5
CVSS
0.4%
EPSS
No
On KEV
Description
OpenEMR is a free and open source electronic health records and medical practice management application. Prior to version 8.0.0.3, an Insecure Direct Object Reference (IDOR) vulnerability in the patient portal payment page allows any authenticated portal patient to access other patients' payment records — including invoice/billing data (PHI) and payment card metadata — by manipulating the `recid` query parameter in `portal/portal_payment.php`. Version 8.0.0.3 patches the issue.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 30% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OP
openemr · openemr
< 8.0.0.3 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-33931
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-33931
Patch
https://github.com/openemr/openemr/commit/7bf30e0ec5587f80c19094d58df09d46ac328806
Product
https://github.com/openemr/openemr/releases/tag/v8_0_0_3
Exploit
https://github.com/openemr/openemr/security/advisories/GHSA-hf37-5rp9-j27j
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