Medium 6.1HealthcarePublished Mar 25, 2026

CVE-2026-33933Reflected XSS via Unescaped contextName Parameter in Custom Template Editor

Updated under an hour ago (2026-10-19 09:30 UTC)

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It affects openemr and 1 other product. Add what you run to find out whether that includes you.

EPSS puts the chance of exploitation in the next 30 days at 0.92%, higher than 60% of scored CVEs.

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Exploited in the last 30 days

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.

CVSS: 6.1 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness (CWE): CWE-79
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): 0.92% (percentile 60)
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Mar 26, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

openemr openemr openemr:openemr (from the name)	from 7.0.2.1, < 8.0.0.3	CNA record
open-emr openemr open-emr:openemr	from 7.0.2.1 before 8.0.0.3	NVD

References

https://github.com/openemr/openemr/security/advisories/GHSA-9qh7-cfq4-j7c3x-refsource-confirm, exploit, vendor-advisory
https://github.com/openemr/openemr/commit/d5c8d49ef19983472b2d7db0dbebd2dac9d6a200x-refsource-misc, patch
https://github.com/openemr/openemr/commit/de9b6eb0da574430e8223c014cf4a05b0adc29d8x-refsource-misc, patch
https://github.com/openemr/openemr/releases/tag/v8_0_0_3x-refsource-misc, product

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.