CVE-2026-33933CWE-79

Reflected XSS via Unescaped contextName Parameter in Custom Template Editor

Medium · published March 25, 2026

CVSS v3.1
6.1
EPSS
1%
Percentile
61.0
In the wild
Unconfirmed
What it is

OpenEMR is a free and open source electronic health records and medical practice management application. Starting in version 7.0.2.1 and prior to version 8.0.0.3, a reflected cross-site scripting (XSS) vulnerability in the custom template editor allows an attacker to execute arbitrary JavaScript in an authenticated staff member's browser session by sending them a crafted URL. The attacker does not need an OpenEMR account. Version 8.0.0.3 patches the issue.

The record
Technical detail
CVSS v3.1
6.1 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00956 · 61.0th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-03-25T23:40Z
EPSS history
Timeline
  • 25 MAR 23:40Z
    Reflected XSS via Unescaped contextName Parameter in Custom Template Editor
    cvelistv5