CVE-2026-24890 OpenEMR Portal Users Can Forge Provider Signatures

High 8.1 Published 25 Feb 2026 Updated 26 Feb 2026

Authenticated portal users can forge provider signatures on medical documents by bypassing authorization checks in the signature endpoint.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-24890?

CVE-2026-24890 is a high-severity missing authorization vulnerability in Open-Emr Openemr, published on 25 Feb 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

OpenEMR is a free and open source electronic health records and medical practice management application. Prior to version 8.0.0, an authorization bypass vulnerability in the patient portal signature endpoint allows authenticated portal users to upload and overwrite provider signatures by setting `type=admin-signature` and specifying any provider user ID. This could potentially lead to signature forgery on medical documents, legal compliance violations, and fraud. The issue occurs when portal users are allowed to modify provider signatures without proper authorization checks. Version 8.0.0 fixes the issue.

Weakness: CWE-285

Which versions are affected by CVE-2026-24890?

It affects 1 product.

Products include Open-Emr Openemr.

How do I fix CVE-2026-24890?

No fix has been published for CVE-2026-24890 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2026-24890 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-24890 exists.

All Open-Emr Openemr vulnerabilities

Sources

Also known as GHSA-xc8x-mfh8-9xvh.