Security readout for executives and security teams
Plain-English summary
OpenEMR versions through 8.0.0 may let a logged-in user view another patient’s eye exam record by referencing its form ID. This is a patient privacy issue in an electronic health records system. Public sources say a fix exists on OpenEMR’s main GitHub branch, but do not state active exploitation.
Executive priority
Prioritize for healthcare environments because it can expose patient clinical data to authenticated but unauthorized users. Treat as a medium-severity privacy and compliance risk, especially where many staff accounts exist or role boundaries are broad.
Technical view
The eye exam eye_mag view trusts a supplied form_id or equivalent without confirming it belongs to the current patient and encounter context. This is CWE-639, an authorization bypass through user-controlled key. CVSS 3.1 is 6.5: network, low complexity, low privileges, no user interaction, high confidentiality impact.
Likely exposure
Organizations running OpenEMR version 8.0.0 or earlier with authenticated users able to access the eye exam module should treat this as relevant. Exposure depends on role permissions and whether eye_mag functionality is enabled or used.
Exploitation context
An attacker needs valid OpenEMR credentials. The issue is not listed in CISA KEV, and the provided sources do not report active exploitation. The main concern is unauthorized access to patient eye exam data, with possible workflow side effects described by the advisory.
Researcher notes
Evidence is limited to the CVE record, GitHub advisory, and referenced commit. Sources indicate the fix is on the main branch, but do not confirm a packaged release. Avoid assuming unauthenticated access or public exploitation. Validate authorization checks around patient, encounter, and form ownership.
Mitigation direction
- Review the OpenEMR advisory and commit for the official fix status.
- Upgrade or apply the vendor-provided fix when available for your deployment path.
- Limit eye exam module access to users with a business need.
- Review role permissions for low-privileged authenticated users.
- Monitor OpenEMR and GitHub advisories for a tagged release or backport.
Validation and detection
- Identify all OpenEMR instances and confirm their versions.
- Check whether any instance runs version 8.0.0 or earlier.
- Confirm whether the eye_mag eye exam functionality is enabled.
- Review access roles allowed to view or edit eye exams.
- Audit recent eye exam access for unexpected patient-context changes or mismatches.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-639: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2026-27943 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N2.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/openemr/openemr/security/advisories/GHSA-q96x-qw99-6xq9CVE reference · x_refsource_CONFIRM
- https://github.com/openemr/openemr/commit/c87489bf63f2701b634d948279e104f2ed3df1c0CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Authorization Bypass Through User-Controlled Key
Authorization Bypass Through User-Controlled Key represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.