Openemr
CVE-2026-33933
MEDIUM
Severity by source
AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Primary rating from GitHub Advisory · only source for this CVE.
CVSS VectorGitHub Advisory
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Lifecycle Timeline
2DescriptionGitHub Advisory
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.
AnalysisAI
A reflected cross-site scripting (XSS) vulnerability exists in the custom template editor of OpenEMR, a widely-deployed open-source electronic health records system. Attackers can craft malicious URLs that, when clicked by authenticated staff members, execute arbitrary JavaScript within their browser sessions and gain access to sensitive medical data and system functions; notably, the attacker does not require an OpenEMR account themselves. …
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Vulnerability AssessmentAI
| Risk Assessment | The CVSS 3.1 score of 6.1 reflects a network-accessible vulnerability with low attack complexity, no privilege requirements for the attacker, but user interaction (the staff member must click the malicious link) and changed scope. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker researches a healthcare organization's use of OpenEMR and crafts a malicious URL containing JavaScript payload in the custom template editor parameter. The attacker emails a clinic manager with a pretext message (e.g., 'Click here to view your updated template'), embedding the malicious URL. … |
| Remediation | Immediately upgrade OpenEMR to version 8.0.0.3 or later, which contains the patches committed in https://github.com/openemr/openemr/commit/d5c8d49ef19983472b2d7db0dbebd2dac9d6a200 and https://github.com/openemr/openemr/commit/de9b6eb0da574430e8223c014cf4a05b0adc29d8. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 30 days: Identify affected systems running version 7.0.2.1 and and apply vendor patches as part of regular patch cycle. …
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External POC / Exploit Code
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