CVE-2023-2949Public exploitNetwork attack vector

Victim-context script execution via unescaped providerID

Published May 28, 2023 · Updated Jan 14, 2025

Reflected XSS in OpenEMR before 7.0.1 allows remote attackers to execute JavaScript in another user's browser through a crafted URL. The eye_base.php endpoint emits the providerID query parameter unquoted into a JavaScript object after applying the wrong context-specific escaping helper. No authentication is required to form the request, but exploitation requires a user to open the crafted link; execution remains within that user's browser context.

CVSS severity6.1
Medium
EPSS probability1.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in OpenEMR before 7.0.1 allows remote attackers to execute JavaScript in another user's browser through a crafted URL. The eye_base.php endpoint emits the providerID query parameter unquoted into a JavaScript object after applying the wrong context-specific escaping helper. No authentication is required to form the request, but exploitation requires a user to open the crafted link; execution remains within that user's browser context.

The record

CVE
CVE-2023-2949
Published
May 28, 2023
Updated
Jan 14, 2025
Vendor
OpenEMR Foundation
Product
OpenEMR
Classifications
CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 28, 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 privilegesunauthenticated

What is affected?

OpenEMR Foundation · OpenEMRversion=unspecified <7.0.1

Published CVSS scores

8.3huntr.devCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L
6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

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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