CVE-2026-40508mediumCWE-79

CVE-2026-40508: medium-severity vulnerability in openemr

OpenEMR < 8.3.0 Stored XSS via Patient Portal Template Import Handler

Published · Updated

Follow this CVE+ Monitor openemr

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 5.1epss 0.3%
OpenEMR before 8.3.0 contains a stored cross-site scripting vulnerability in the patient portal template import handler that allows authenticated attackers with Forms Administration permissions to upload template files containing arbitrary HTML or JavaScript. Attackers can inject malicious scripts through the template upload functionality, which are stored without sanitization and execute in the browser of any other Forms Administration user who views the template in the HTML editor.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
Affected products
openemr · openemr
Related CVEs — openemr

In the same product, most dangerous first.

CVE-2025-31121HIGHOpenEMR allows XSS in Patient Image featureEPSS 17.3%CVE-2025-43860HIGHOpemEMR Vulnerable to Stored XSS Attack in the Additional Address Section of Patient DemographicsEPSS 15.0%CVE-2025-30161HIGHOpenEMR Stored XSS in OpenEMR Bronchitis FormEPSS 10.9%CVE-2025-32794HIGHOpenEMR Stored XSS via Patient Name Field in Procedure OrdersEPSS 10.5%CVE-2026-24848HIGHOpenEMR Arbitrary File Write leading to Remote Code ExecutionEPSS 7.2%CVE-2025-69231HIGHOpenEMR has a Stored XSS in GAD-7 Form that Enables Session Hijacking and Privilege EscalationEPSS 4.1%