OpenEMR up to 8.0.0.2 portal/lib/paylib.php cross site scripting

Summaryinfo

A vulnerability was found in OpenEMR up to 8.0.0.2. It has been declared as problematic. The impacted element is an unknown function in the library portal/lib/paylib.php. The manipulation results in cross site scripting. This vulnerability was named CVE-2026-33346. The attack may be performed from remote. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in OpenEMR up to 8.0.0.2. It has been classified as problematic. Affected is some unknown processing in the library portal/lib/paylib.php. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. CVE summarizes:

OpenEMR is a free and open source electronic health records and medical practice management application. Prior to 8.0.0.2, a stored cross-site scripting (XSS) vulnerability in the patient portal payment flow allows a patient portal user to persist arbitrary JavaScript that executes in the browser of a staff member who reviews the payment submission. The payload is stored via `portal/lib/paylib.php` and rendered without escaping in `portal/portal_payment.php`. Version 8.0.0.2 fixes the issue.

The advisory is available at github.com. This vulnerability is traded as CVE-2026-33346 since 03/18/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1059.007 by the MITRE ATT&CK project.

By approaching the search of inurl:portal/lib/paylib.php it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 8.0.0.2 eliminates this vulnerability. Applying the patch 6e9e1566d6e271a6d839614674b887e3a73d7da1 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Type

• Business Process Management Software

Name

• OpenEMR

Version

• 8.0.0.0
• 8.0.0.1
• 8.0.0.2

License

• open-source

Website

• Product: https://github.com/openemr/openemr/

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