CVE-2026-9564Public exploitNetwork attack vector

Browser script execution via unencoded Remarks output

Published May 26, 2026 · Updated May 26, 2026

Stored XSS in Hospital's Patient Records Management System 1.0 allows remote authenticated users to execute scripts in a victim's browser. The patient view at /admin/?page=patients/view_patient outputs the Remarks field directly into HTML without encoding or filtering. Exploitation requires high-privilege access and a victim to view the poisoned record, enabling page tampering or actions within that browser session.

CVSS severity2.4
Low
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Hospital's Patient Records Management System 1.0 allows remote authenticated users to execute scripts in a victim's browser. The patient view at /admin/?page=patients/view_patient outputs the Remarks field directly into HTML without encoding or filtering. Exploitation requires high-privilege access and a victim to view the poisoned record, enabling page tampering or actions within that browser session.

The record

CVE
CVE-2026-9564
Published
May 26, 2026
Updated
May 26, 2026
Vendor
Online Computer and Laptop Store Project
Product
Hospital's Patient Records Management System
Classifications
CWE-79, CWE-94, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. May 26, 2026CVE publishedPublication date reported by the CVE source.
  2. May 26, 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=1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Online Computer and Laptop Store Project · Hospital's Patient Records Management Systemversion=1.0

Published CVSS scores

3.3VulDBAV:N/AC:L/Au:M/C:N/I:P/A:N
2.4VulDBCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N
1.9VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P

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')
CWE-94Improper Control of Generation of Code ('Code Injection')
T1059.007Command and Scripting Interpreter: JavaScript/JScript

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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