Unrated severityNVD Advisory· Published Mar 25, 2026· Updated Mar 26, 2026
Reflected XSS via Unescaped contextName Parameter in Custom Template Editor
CVE-2026-33933
Description
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.
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Affected products
2Patches
Vulnerability mechanics
References
4- github.com/openemr/openemr/commit/d5c8d49ef19983472b2d7db0dbebd2dac9d6a200mitrex_refsource_MISC
- github.com/openemr/openemr/commit/de9b6eb0da574430e8223c014cf4a05b0adc29d8mitrex_refsource_MISC
- github.com/openemr/openemr/releases/tag/v8_0_0_3mitrex_refsource_MISC
- github.com/openemr/openemr/security/advisories/GHSA-9qh7-cfq4-j7c3mitrex_refsource_CONFIRM
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