CVE-2026-67612Public exploitNetwork attack vectorHinoki check available

Session hijacking via raw portal template rendering

Published Aug 3, 2026 · Updated Aug 3, 2026

Stored XSS in the patient portal template system in OpenEMR 8.2.0 and earlier allows remote authenticated users to hijack sessions. Template save mode blocks only literal PHP open tags, and template retrieval returns stored HTML and JavaScript without output encoding. Forms Administration privileges are required to plant the payload; a victim session is exposed when an administrator, clinician, or portal patient views it because the session cookie lacks HttpOnly.

CVSS severity4.8
Medium
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Stored XSS in the patient portal template system in OpenEMR 8.2.0 and earlier allows remote authenticated users to hijack sessions. Template save mode blocks only literal PHP open tags, and template retrieval returns stored HTML and JavaScript without output encoding. Forms Administration privileges are required to plant the payload; a victim session is exposed when an administrator, clinician, or portal patient views it because the session cookie lacks HttpOnly.

The record

CVE
CVE-2026-67612
Published
Aug 3, 2026
Updated
Aug 3, 2026
Vendor
OpenEMR Foundation
Product
OpenEMR
Classifications
CWE-79, T1059.007, T1539
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Aug 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2026Record 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=0 <=8.2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

OpenEMR Foundation · OpenEMRversion=0 <=8.2.0

Published CVSS scores

4.8VulnCheckCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
4.8VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA: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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007JavaScript/JScript
T1539Steal Web Session Cookie

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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