XSS in Open-Emr Openemr

CVE-2026-33348

OpenEMR is a free and open source electronic health records and medical practice management application. Users with the `Notes - my encounters` role can fill Eye Exam forms in patient encounters. The answers to the form are displayed on the encounter page and in the visit history for the users with the same role. Versions prior to 8.0.0.3 have a stored cross-site scripting (XSS) vulnerability in the function to display the form answers, allowing any authenticated attacker with the specific role to insert arbitrary JavaScript into the system by entering malicious payloads to the form answers. The JavaScript code is later executed by any user with the form role when viewing the form answers in the patient encounter pages or visit history. Version 8.0.0.3 contains a patch.

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: 0.009 (59.7th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 59.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-33348: rose from 0.003 to 0.009.

EPSS over last 30 days · oldest: 0.003 · newest: 0.009 · change: +0.007

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-33348?
CVE-2026-33348 is a high-severity vulnerability in Open-Emr Openemr, classified under Cross-site Scripting. CVSS score: 8.7/10. Published 2026-03-25.
How severe is CVE-2026-33348?
High severity. CVSS v3 base score is 8.7 out of 10.