XSS in Open-Emr Openemr
CVE-2026-33933
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.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.009 (58.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 58.7% 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: 0.009 · change: +0.006
Affected products
- Open-Emr Openemr
- Openemr — versions >= 7.0.2.1, < 8.0.0.3
Weakness classification (CWE)
References
- github.com/openemr/openemr/security/advisories/GHSA-9qh7-cfq4-j7c3 (Exploit, Vendor Advisory)
- github.com/openemr/openemr/commit/d5c8d49ef19983472b2d7db0dbebd2dac9d6a200 (Patch)
- github.com/openemr/openemr/commit/de9b6eb0da574430e8223c014cf4a05b0adc29d8 (Patch)
- github.com/openemr/openemr/releases/tag/v8_0_0_3 (Product)
Frequently asked questions
- What is CVE-2026-33933?
- CVE-2026-33933 is a medium-severity vulnerability in Open-Emr Openemr, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-03-26.
- How severe is CVE-2026-33933?
- Medium severity. CVSS v3 base score is 6.1 out of 10.