What is CVE-2026-103019?

CVE-2026-103019 is a medium-severity vulnerability in Openemr, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 4.3/10. Published 2026-11-05.

How severe is CVE-2026-103019?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Open Redirect in Openemr

CVE-2026-103019

OpenEMR is a free and open source electronic health records and medical practice management application. Prior to 8.3.0, userSessionLogout() in src/RestControllers/AuthorizationController.php uses decodeToken() to process an id_token_hint without verifying its signature and, when the referenced trusted session is absent, redirects to the caller-supplied post_logout_redirect_uri before validating it against the client's registered redirect URIs. An unauthenticated attacker can craft a logout link that sends a user to an arbitrary external site and invalidates the user's session, enabling convincing phishing flows from the legitimate logout endpoint. The endpoint is reachable when the OpenEMR REST API is enabled. This issue is fixed in version 8.3.0.

Vulnerability class: Open Redirect

Published 2026-11-05 · last modified 2026-11-06.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Openemr — versions < 8.3.0

Weakness classification (CWE)

CWE-601 — URL Redirection to Untrusted Site (Open Redirect)

References

Frequently asked questions

What is CVE-2026-103019?: CVE-2026-103019 is a medium-severity vulnerability in Openemr, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 4.3/10. Published 2026-11-05.
How severe is CVE-2026-103019?: Medium severity. CVSS v3 base score is 4.3 out of 10.