CVE-2026-104136: openemr Access Control Flaw

Description

OpenEMR is a free and open source electronic health records and medical practice management application. Prior to 8.3.0, the new_recall branch of interface/main/messages/save.php accepts a caller-supplied pid without enforcing patient-level or recall-workflow authorization. A low-privilege authenticated user who knows or enumerates a patient identifier can retrieve patient details, contact fields, HIPAA notification preferences, recent appointment information, and existing recall information. This issue is fixed in version 8.3.0.

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CVSS v3.1 Score

6.5

MEDIUM

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

EPSS — Exploit Prediction

0.0037

Probability of exploitation

0.31%

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-284 CWE-284

Affected Products

Vendor	Product	Versions
open-emr	openemr	< 8.3.0

References

Advisories & Patches

https://github.com/openemr/openemr/commit/12fb549fd16ceed488c9d20281dba46f098ff107 https://github.com/openemr/openemr/pull/13343 https://github.com/openemr/openemr/security/advisories/GHSA-x6w3-3g4m-5m5v https://github.com/openemr/openemr/security/advisories/GHSA-x6w3-3g4m-5m5v

Exploits

https://github.com/openemr/openemr/security/advisories/GHSA-x6w3-3g4m-5m5v https://github.com/openemr/openemr/security/advisories/GHSA-x6w3-3g4m-5m5v

Other References

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

Frequently Asked Questions

What is CVE-2026-104136? +

OpenEMR is a free and open source electronic health records and medical practice management application. Prior to 8.3.0, the new_recall branch of interface/main/messages/save.php accepts a caller-supplied pid without enforcing patient-level or recall-workflow authorization. A low-privilege authenticated user who knows or enumerates a patient identifier can retrieve patient details, contact fields, HIPAA notification preferences, recent appointment information, and existing recall information. This issue is fixed in version 8.3.0. It has a CVSS v3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2026-104136? +

CVE-2026-104136 has a CVSS v3.1 score of 6.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0037, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-104136? +

CVE-2026-104136 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-2026-104136? +

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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