Vulnerability · Published Feb 25, 2026 · Assigned by GitHub_M

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

High 8.1

In plain English

A high-severity security flaw in openemr from openemr. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 20% of all known vulnerabilities).

Severity (CVSS 3.1)8.1High

Exploit odds (30 days)0.3%top 79.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

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.

Affected products (as reported)

Vendor	Product	Versions
openemr	openemr	< 8.0.0

Weakness: CWE-285 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

References

https://github.com/openemr/openemr/security/advisories/GHSA-xc8x-mfh8-9xvh x_refsource_CONFIRM
https://github.com/openemr/openemr/commit/a29c0f7ac0975429a85cd09a3ff12ee0dcdb4478 x_refsource_MISC