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CVE-2026-33346

Open-emr Openemr cross-site scripting (XSS)

8.7 HIGHPublic exploitEPSS 1.02%
  1. Published19 Mar 2026

Description

OpenEMR is a free and open source electronic health records and medical practice management application. Prior to 8.0.0.2, a stored cross-site scripting (XSS) vulnerability in the patient portal payment flow allows a patient portal user to persist arbitrary JavaScript that executes in the browser of a staff member who reviews the payment submission. The payload is stored via `portal/lib/paylib.php` and rendered without escaping in `portal/portal_payment.php`. Version 8.0.0.2 fixes the issue.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionRequired
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

Affected products

Open-emr Openemr< 8.0.0.2

Remediation

Fixed in
Open-emr Openemr≥ 8.0.0.2

References

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Frequently asked

Is CVE-2026-33346 being actively exploited?

CVE-2026-33346 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 1.02%.

How severe is CVE-2026-33346?

CVE-2026-33346 has a CVSS 3.1 base score of 8.7, rated high. EPSS estimates a 1.02% probability of exploitation.

Which products are affected by CVE-2026-33346?

Affected products include Open-emr Openemr.

How do I fix CVE-2026-33346?

Upgrade affected software to a fixed version, for example Open-emr Openemr 8.0.0.2 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-33346 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.