How severe is CVE-2026-33933?

CVE-2026-33933 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2026-33933 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-33933?

CVE-2026-33933 affects Open-emr Openemr. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-33933?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-33933 have an EU (EUVD) identifier?

Yes. CVE-2026-33933 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-16040.

When was CVE-2026-33933 published?

CVE-2026-33933 was published on 2026-03-26 and last updated on 2026-06-17.

CVE-2026-33933

CVE-2026-33933 is a medium-severity vulnerability in Open-emr Openemr with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
EPSS exploit prediction: 0% (19th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-16040
Weakness: CWE-79
Affected product: Open-emr Openemr
Published: 2026-03-26
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-33933?: 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.
How severe is CVE-2026-33933?: CVE-2026-33933 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2026-33933 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-33933?: CVE-2026-33933 affects Open-emr Openemr. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-33933?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-33933 have an EU (EUVD) identifier?: Yes. CVE-2026-33933 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-16040.
When was CVE-2026-33933 published?: CVE-2026-33933 was published on 2026-03-26 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:open-emr:openemr:*:*:*:*:*:*:*:*

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