XSS in Openemr
CVE-2026-67612
OpenEMR through 8.2.0 contains a stored cross-site scripting vulnerability in the patient portal template system that allows authenticated administrators to inject arbitrary HTML and JavaScript by storing malicious payloads through the template save mode, which only filters literal PHP open tags. Attackers can exploit the lack of output encoding at the template retrieval endpoint combined with missing HttpOnly cookie attributes to exfiltrate session tokens via document.cookie access, enabling full session hijacking of any admin, clinician, or portal patient who views a poisoned template.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (16.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 17th percentile — 16.7% 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: 0.003 · change: 0.000
Affected products
- Openemr — versions 0
Weakness classification (CWE)
References
- jivasecurity.com/writeups/openemr-portal-template-stored-xss (technical-description, exploit)
- www.vulncheck.com/advisories/openemr-stored-xss-via-import-template-php-templat… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-67612?
- CVE-2026-67612 is a medium-severity vulnerability in Openemr, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2026-08-03.
- How severe is CVE-2026-67612?
- Medium severity. CVSS v3 base score is 4.8 out of 10.