Stored Cross-Site Scripting Vulnerability in OpenEMR Patient Portal by OpenEMR
CVE-2026-67612

4.8MEDIUM

Key Information:

Vendor

Openemr

Status
Openemr
Vendor
CVE Published:
3 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-67612?

OpenEMR versions up to 8.2.0 are susceptible to a stored cross-site scripting (XSS) vulnerability found in the patient portal template system. Authenticated administrators can inadvertently introduce malicious HTML and JavaScript payloads through the template save mode, which inadequately filters PHP open tags. This vulnerability not only lacks adequate output encoding during template retrieval but also has missing HttpOnly cookie attributes, which together facilitate the exfiltration of session tokens. As a result, an attacker can exploit this vulnerability to hijack the sessions of any admin, clinician, or patient interacting with a compromised template.

Affected Version(s)

openemr 0 <= 8.2.0

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-67612 - Proof of Concept

References

https://jivasecurity.com/writeups/openemr-portal-template...
technical-descriptionexploit
https://www.vulncheck.com/advisories/openemr-stored-xss-v...
third-party-advisory

CVSS V4

Score:
4.8
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Jiva (JivaSecurity)
.