CVE-2026-124453 — Openemr
HIGHCVE-2026-124453 is a high-severity (CVSS 7.1) CWE-639 vulnerability. The records list no fixed version yet; check the vendor advisory below and apply the mitigations in the meantime.
OpenEMR before 8.3.0 contains an insecure direct object reference vulnerability in portal/lib/persist.php that allows authenticated portal patients to write settings for other patients.…
Description
OpenEMR before 8.3.0 contains an insecure direct object reference vulnerability in portal/lib/persist.php that allows authenticated portal patients to write settings for other patients. Attackers can modify the setting_patient parameter in a JSON POST request to another patient's PID, altering that patient's portal settings such as the portal theme.
Detection & mitigation playbook
VulnerabilityDetect
Identify every host running the affected component and compare the installed build against the fixed version below — for source-built or distro-packaged software the version string, not a lockfile, is the source of truth (`dpkg -l`, `rpm -q`, or the binary's own `--version`).
Remediation status
The records we use list no fixed release for CVE-2026-124453. Check the upstream advisory for a patched version, and apply the exposure-reduction steps below in the meantime.
Mitigate without a patch
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
Frequently Asked Questions
Is CVE-2026-124453 in your dependencies?
Find it across your dependency tree, including transitive dependencies.