CVE-2026-104133: openemr Auth Bypass

Description

OpenEMR is a free and open source electronic health records and medical practice management application. Prior to 8.3.0, interface/modules/custom_modules/oe-module-dorn/public/compendium_install.php checks authentication and CSRF but does not require the admin/users ACL enforced by sibling DORN administration scripts. When the DORN module is enabled, a low-privilege authenticated user can supply a labGuid that causes LabCompendiumInstall::uninstall() to delete detail and result procedure types and deactivate order types before the reinstall step. The action can corrupt lab-ordering configuration and require an administrator to restore the compendium. This issue is fixed in version 8.3.0.

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CVSS v3.1 Score

7.1

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L

EPSS — Exploit Prediction

0.0047

Probability of exploitation

0.41%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-862 Missing Authorization

Affected Products

Vendor	Product	Versions
open-emr	openemr	< 8.3.0

References

Advisories & Patches

https://github.com/openemr/openemr/commit/7973cab3fe3f2fd2374ed71c02605e3c93491c36 https://github.com/openemr/openemr/pull/13200 https://github.com/openemr/openemr/security/advisories/GHSA-jh2v-595q-h9vc https://github.com/openemr/openemr/security/advisories/GHSA-jh2v-595q-h9vc

Exploits

https://github.com/openemr/openemr/security/advisories/GHSA-jh2v-595q-h9vc https://github.com/openemr/openemr/security/advisories/GHSA-jh2v-595q-h9vc

Other References

https://github.com/openemr/openemr/releases/tag/v8_3_0

Frequently Asked Questions

What is CVE-2026-104133? +

OpenEMR is a free and open source electronic health records and medical practice management application. Prior to 8.3.0, interface/modules/custom_modules/oe-module-dorn/public/compendium_install.php checks authentication and CSRF but does not require the admin/users ACL enforced by sibling DORN administration scripts. When the DORN module is enabled, a low-privilege authenticated user can supply a labGuid that causes LabCompendiumInstall::uninstall() to delete detail and result procedure types and deactivate order types before the reinstall step. The action can corrupt lab-ordering configuration and require an administrator to restore the compendium. This issue is fixed in version 8.3.0. It has a CVSS v3.1 base score of 7.1 (HIGH).

How severe is CVE-2026-104133? +

CVE-2026-104133 has a CVSS v3.1 score of 7.1 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0047, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-104133? +

CVE-2026-104133 affects products from open-emr, specifically: openemr. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-104133? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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