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

6.5MediumCNA
Exploited
Proof of concept public, per CISA
Fix
Fixed in 8.3.0
Who is exposed
Not reported

Do first: Upgrade to a fixed version: 8.3.0.

Published
Last modified
25/100 · provisional
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: poc
  • Automatable: no
  • Technical impact: partial

Summary

OpenEMR, an open source electronic health records and medical practice management application, is affected by a missing authorization check in its payment patient-search AJAX handler. A remote attacker who has any logged-in account, including a non-clinical role, can reach the flaw over the network and use it to list patient names, identifiers, and dates of birth.

Written by anthropic/claude-haiku-5.5 from the sources below. Verify against them.

Read the original description

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.

cve.now Index

25Pcve.now Index 25 of 100 · methodology v3 · provisional
  • Exploitation15/40CISA rates a proof of concept as public
  • Exposure3/25Reachable over the network · Unknown: No advisory context yet
  • Reach?/20Unknown. No tracked technology or package matched
  • Severity6.5/10CVSS 6.5
  • No patch0/5No signal

What would change the score

  • Would score about 65 if added to CISA KEV
  • Would score about 60 if CISA's SSVC rates exploitation active
  • Would score about 44 if advisories confirm default setups are exposed

What to do

  • Upgrade to a fixed version: 8.3.0.

Timeline

  1. CVE published
  2. First seen by cve.now
  3. CISA SSVC assessment

    Exploitation: poc · Automatable: no · Technical impact: partial

  4. Record last updated

Affected versions

  • openemr openemr

    fixed in 8.3.0

Evidence 4

  1. Advisory
  2. Repository
  3. Repository
  4. Repository

Corrections

None so far.

Something wrong on this page? Report an error. Every fix is listed here.

Questions about CVE-2026-104135

Is CVE-2026-104135 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. CISA's SSVC assessment notes a proof of concept exists. No public exploit code is tracked.Source: cve.now feed data

Which versions are affected by CVE-2026-104135?

openemr: before 8.3.0.Source: cve.now feed data

How do I fix CVE-2026-104135?

Upgrade to a fixed version: 8.3.0.Source: cve.now feed data