XSS in Open-Emr Openemr
CVE-2026-33346
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.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.010 (62.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 62nd percentile — 62.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.010 · change: +0.007
Affected products
- Open-Emr Openemr
- Openemr — versions < 8.0.0.2
Weakness classification (CWE)
References
- github.com/openemr/openemr/security/advisories/GHSA-qvf6-6xc6-9qv7 (Exploit, Vendor Advisory)
- github.com/openemr/openemr/commit/6e9e1566d6e271a6d839614674b887e3a73d7da1 (Patch)
Frequently asked questions
- What is CVE-2026-33346?
- CVE-2026-33346 is a high-severity vulnerability in Open-Emr Openemr, classified under Cross-site Scripting. CVSS score: 8.7/10. Published 2026-03-19.
- How severe is CVE-2026-33346?
- High severity. CVSS v3 base score is 8.7 out of 10.