CVE-2026-40507
5.1
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
Summary
OpenEMR before 8.3.0 contains a reflected cross-site scripting vulnerability in the patient portal template import handler. The templateHtml GET parameter is reflected into the page response without sanitization. An attacker can craft a URL that executes arbitrary JavaScript in the browser of any authenticated user with Forms Administration permissions who visits the link, enabling session hijacking.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| openemr | openemr | 0 < 8.3.0 | affected |
Weaknesses
- CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
References
- https://github.com/openemr/openemr/security/advisories/GHSA-rmmr-8498-463g
- https://github.com/openemr/openemr/releases/tag/v8_3_0
- https://github.com/openemr/openemr/commit/ba316dd1d8de1291102da3f20f64240729ff899e
- https://www.vulncheck.com/advisories/openemr-reflected-xss-via-templatehtml-parameter-in-patient-portal
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