CVE-2022-2733Public exploitNetwork attack vector

Reflected script execution via unescaped fee-sheet JSON

Published Aug 9, 2022 · Updated Aug 3, 2024

Reflected XSS in OpenEMR before 7.0.0.1 allows remote attackers to execute script in a user's browser through fee-sheet AJAX output. The fee_sheet_options_ajax.php handler echoed JSON directly, allowing untrusted fee-sheet values to remain executable markup instead of applying the text() output encoding used by the fix. Exploitation requires no attacker account but requires a user to open a crafted request; injected script then runs in the trusted application origin.

CVSS severity6.1
Medium
EPSS probability95.84%
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 7.0.0.1 allows remote attackers to execute script in a user's browser through fee-sheet AJAX output. The fee_sheet_options_ajax.php handler echoed JSON directly, allowing untrusted fee-sheet values to remain executable markup instead of applying the text() output encoding used by the fix. Exploitation requires no attacker account but requires a user to open a crafted request; injected script then runs in the trusted application origin.

The record

CVE
CVE-2022-2733
Published
Aug 9, 2022
Updated
Aug 3, 2024
Vendor
OpenEMR Foundation
Product
OpenEMR
Classifications
CWE-79, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 9, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record 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 <7.0.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

OpenEMR Foundation · OpenEMRversion=unspecified <7.0.0.1

Published CVSS scores

6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
9.6huntr.devCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

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')
T1189Drive-by Compromise

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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