CVE-2023-2945Public exploitNetwork attack vector

Patient message impersonation via unchecked sender identity

Published May 27, 2023 · Updated Jan 14, 2025

Missing authorization in OpenEMR before 7.0.1 allows remote authenticated users to send portal messages under another patient's identity. The portal/messaging/handle_note.php handler accepted posted sender_id and sender_name values without comparing them with the authenticated portal session and patient record. A patient-portal account is required; exploitation changes message attribution but does not grant broader account privileges.

CVSS severity4.3
Medium
EPSS probability0.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in OpenEMR before 7.0.1 allows remote authenticated users to send portal messages under another patient's identity. The portal/messaging/handle_note.php handler accepted posted sender_id and sender_name values without comparing them with the authenticated portal session and patient record. A patient-portal account is required; exploitation changes message attribution but does not grant broader account privileges.

The record

CVE
CVE-2023-2945
Published
May 27, 2023
Updated
Jan 14, 2025
Vendor
OpenEMR Foundation
Product
OpenEMR
Classifications
CWE-862
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 27, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 14, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <7.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

OpenEMR Foundation · OpenEMRversion=unspecified <7.0.1

Published CVSS scores

5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
4.3huntr.devCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-862Missing Authorization

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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