CVE-2026-21443 OpenEMR allows inconsistent escaping of translation function output
Attackers can inject malicious scripts via unescaped translation strings in OpenEMR, potentially leading to XSS attacks.
- 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-2026-21443?
CVE-2026-21443 is a low-severity cross-site scripting vulnerability in Open-Emr Openemr, published on 25 Feb 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, the `xl()` translation function returns unescaped strings. While wrapper functions exist for escaping in different contexts (`xlt()` for HTML, `xla()` for attributes, `xlj()` for JavaScript), there are places in the codebase where `xl()` output is used directly without escaping. If an attacker could insert malicious content into the translation database, these unescaped outputs could lead to XSS. Version 8.0.0 fixes the issue.
Weakness: CWE-116
Which versions are affected by CVE-2026-21443?
It affects 1 product.
Products include Open-Emr Openemr.
How do I fix CVE-2026-21443?
No fix has been published for CVE-2026-21443 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-2026-21443 being exploited?
There is no known exploitation of CVE-2026-21443 in the wild and no public exploit code.
Other vulnerabilities in Open-Emr Openemr
- CVE-2026-24898 OpenEMR has an Unauthenticated MedEx Token Disclosure
- CVE-2026-24849 OpenEMR Arbitrary File Read Vulnerability
- CVE-2026-24908 OpenEMR has SQL Injection in Patient API Sort Parameter
- CVE-2022-2734 Improper Restriction of Rendered UI Layers or Frames in openemr/openemr
- CVE-2024-22611 SQL injection in n/a
Sources
Also known as GHSA-3f9j-cqjj-7h46.