CVE-2026-124486: OpenEMR missing authorization in classic document controller

CVE-2026-124486 · Severity: high · CVSS 8.8 · Published 2026-11-08

OpenEMR is a web-based electronic health records (EHR) system used by healthcare providers to manage patient data. A low-privilege staff user can reclassify another patient's documents into readable categories and download them, leading to unauthorized access to protected health information (PHI) and the ability to tamper with patient charts. This allows cross-patient document exfiltration and persistent chart manipulation by insiders.

Technologies: OpenEMR. Vendors: OpenEMR.

Quick answers

Is CVE-2026-124486 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-124486 being exploited in the wild.
How severe is CVE-2026-124486?
High severity, with a CVSS score of 8.8, published 8 November 2026.
Which products and versions are affected?
OpenEMR before 8.3.0.
Is there a fix for CVE-2026-124486?
Yes: fixed in 8.3.0. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-124486 attacked?
It is attacked over the network, in a web application.
Am I affected by CVE-2026-124486?
Check whether you run OpenEMR at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • Fixed in: 8.3.0

Technical details

The classic document controller is missing from CONTROLLER_ACL_MAP, so the dispatcher applies no base ACL check to controller=document requests. The move_action_process() method updates document categorizations without validating source-document ownership or patient context. The retrieve_action() method then relies only on the document's current category and bypasses the document-to-patient binding check when patient_id is empty, allowing an attacker to move a document into a readable category and retrieve it as cross-patient PHI.

Affected products

  • OpenEMR OpenEMR before 8.3.0

Timeline

  • 2026-08-18: disclosed
  • 2026-11-08: advisory

References

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