OpenEMR before 8.4.0 Cross-Patient Payment Tampering via Rainforest Portal Payments
CVSS score
7.1
EPSS probability
—
Risk score
0.7
Published
2 h ago
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Impact on My Inventory
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Vulnerability description
DayBreach AI Explanation
Verified against sourcesSources read
1
Source agreement
Tam uyum
Evidence confidence
%55
Short explanation
OpenEMR before version 8.4.0 contains an improper authorization vulnerability in Rainforest patient portal payments [S0]. Authenticated portal patients can tamper with browser-supplied values to write forged credits to other patients' encounters [S0].
This vulnerability allows authenticated users to manipulate payment data, writing forged credits exceeding the actually paid amount to other patients' encounters [S0].
What should be done?
- Follow vendor security advisories for updates [S0]
Chain of evidence and sources
OpenEMR 8.4.0 öncesi sürümler, uygunsuz yetkilendirme nedeniyle çapraz hasta ödeme manipülasyonuna açıktır.
Kimliği doğrulanmış portal hastaları, portal_payment.rainforest.php dosyasına giden JSON verilerini manipüle edebilir.
Show the technical text from the sources
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.
CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
CWE: CWE-639
This explanation was compiled automatically from the source records. Scores, active exploitation, patch and exploit status come straight from the sources.
IMPACT: Affected Products and Software
Affected Products
The following products are affected by CVE-2026-124481 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.
| ID | VENDOR | PRODUCT | ACTION |
|---|---|---|---|
| 1 | openemr | openemr | View |
RED HAT CSAF/VEX: Product Impact Check
SCORING: CVSS from Multiple Sources
CVSS Scores
The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.
| SCORE | VERSION | SEVERITY | VECTOR | SOURCE |
|---|---|---|---|---|
| 7.1 | CVSS V40 | HIGH | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X | NVD |
| 7.1 | CVSS V4_0 | HIGH | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N | CVE CNA |
| 6.5 | CVSS V31 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N | NVD |
| 6.5 | CVSS V3_1 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N | CVE CNA |
Patch and Remediation Guide
Solution & Remediation Advisory
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Public exploit and active exploitation status
Verified exploit intelligence
No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.
Weakness Classification and Attack Patterns (CWE & CAPEC)
CWE - Common Weakness Enumeration
While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-124481 is associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-124481 weaknesses.
Attack Vector and Accessibility
Official Sources and Advisories
Similar Vulnerabilities
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