CVE-2026-33932 OpenEMR has Stored XSS in CCDA Preview via Unsanitized linkHtml Attributes

High 7.6 Published 25 Mar 2026 Updated 30 Mar 2026

Attackers can execute arbitrary JavaScript in clinician browsers via unsanitized linkHtml attributes in CCDA document previews.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2026-33932?

CVE-2026-33932 is a high-severity cross-site scripting vulnerability in Open-Emr Openemr, published on 25 Mar 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

OpenEMR is a free and open source electronic health records and medical practice management application. Prior to version 8.0.0.3, a stored cross-site scripting vulnerability in the CCDA document preview allows an attacker who can upload or send a CCDA document to execute arbitrary JavaScript in a clinician's browser session when the document is previewed. The XSL stylesheet sanitizes attributes for all other narrative elements but not for `linkHtml`, allowing `href="javascript:..."` and event handler attributes to pass through unchanged. Version 8.0.0.3 patches the issue.

Weakness: CWE-79

Which versions are affected by CVE-2026-33932?

It affects 1 product.

Products include Open-Emr Openemr.

How do I fix CVE-2026-33932?

No fix has been published for CVE-2026-33932 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2026-33932 being exploited?

There is no known exploitation of CVE-2026-33932 in the wild and no public exploit code.

All Open-Emr Openemr vulnerabilities

Sources

Also known as GHSA-g77x-9p3x-2j8f.