OpenEMR before 8.4.0 contains an improper authorization vulnerability in Rainforest patient portal payments that trusts browser-supplied patientId, encounter, and amount values instead of deriving them from the portal session. Authenticated portal patients can tamper with JSON sent to portal_payment.rainforest.php so the payin.authorized webhook writes forged ar_activity credits to other patients' encounters exceeding the amount actually paid.
Metrics
Affected Vendors & Products
Advisories
No advisories yet.
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Sun, 08 Nov 2026 13:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | OpenEMR before 8.4.0 contains an improper authorization vulnerability in Rainforest patient portal payments that trusts browser-supplied patientId, encounter, and amount values instead of deriving them from the portal session. Authenticated portal patients can tamper with JSON sent to portal_payment.rainforest.php so the payin.authorized webhook writes forged ar_activity credits to other patients' encounters exceeding the amount actually paid. | |
| Title | OpenEMR before 8.4.0 Cross-Patient Payment Tampering via Rainforest Portal Payments | |
| First Time appeared |
Open-emr
Open-emr openemr |
|
| Weaknesses | CWE-639 | |
| CPEs | cpe:2.3:a:open-emr:openemr:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Open-emr
Open-emr openemr |
|
| References |
| |
| Metrics |
cvssV3_1
|
Projects
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MITRE
Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-11-08T13:16:00.737Z
Reserved: 2026-11-08T02:17:31.141Z
Link: CVE-2026-124481
Vulnrichment
No data.
NVD
Status : Received
Published: 2026-11-08T14:18:17.300
Modified: 2026-11-08T14:18:17.300
Link: CVE-2026-124481
Redhat
No data.
OpenCVE Enrichment
No data.
Weaknesses