# CVE-2026-104135: OpenEMR: Missing authorization in payment patient-search AJAX leaks patient directory and dates of birth

Status: published. Published: 2026-11-05. Updated: 2026-11-05.

OpenEMR is a free and open source electronic health records and medical practice management application. Prior to 8.3.0, library/ajax/payment_ajax.php validates a CSRF token but performs no AclMain authorization check before executing a wildcard search of patient_data. Any authenticated user, including a non-clinical role, can enumerate patient identifiers, full names, and dates of birth through the set_patient branch. This issue is fixed in version 8.3.0.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- openemr / openemr: < 8.3.0 (affected). Source: CNA: GitHub_M

## Severity and prioritization

- CVSS 3.1: 6.5 (medium); CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N; source: CNA: GitHub_M

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: exploitation poc; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-862

## Exploit evidence

- exploit: https://github.com/openemr/openemr/security/advisories/GHSA-4269-grc6-qr62 (ADP: CISA-ADP)

## References

- https://github.com/openemr/openemr/security/advisories/GHSA-4269-grc6-qr62 (CNA: GitHub_M; x_refsource_CONFIRM)

- https://github.com/openemr/openemr/pull/13200 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/openemr/openemr/commit/7973cab3fe3f2fd2374ed71c02605e3c93491c36 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/openemr/openemr/releases/tag/v8_3_0 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/openemr/openemr/security/advisories/GHSA-4269-grc6-qr62 (ADP: CISA-ADP; exploit)

## Provenance

- CNA: GitHub_M: https://www.cve.org/CVERecord?id=CVE-2026-104135; retrieved 2026-11-05; source updated 2026-11-05

Revision: c083807619490034c9752560e05717c013ea7ecd2caeb55ec9a295aea82dcd96

Canonical: https://y2.dev/cve/CVE-2026-104135

## Agent and API access

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- Cyber API: https://api.y2.dev/api/v2/cyber/cves and https://api.y2.dev/api/v2/cyber/cves/{cveId}.

- Y2 Pro or Elite: create a workspace API key with the intel:cyber scope and send Authorization: Bearer <Y2_API_KEY>. Setup: https://y2.dev/docs/api/create-key.

- x402: Pay per request without an account or API key. Omit Authorization, read the HTTP 402 PAYMENT-REQUIRED challenge, validate its current requirements, and retry with PAYMENT-SIGNATURE through an authorized payment client. These browser tools never make payments. Guide: https://y2.dev/docs/api/x402.

- OpenAPI: https://y2.dev/api/openapi.yaml. Agent access metadata: https://y2.dev/cve/agent.json.

Collected public records only. Check source status for coverage and freshness.