CVE-2025-3489Public exploitNetwork attack vector

Stored script execution via unescaped registration fields

Published Apr 10, 2025 · Updated Apr 10, 2025

Stored cross-site scripting in Nababur Simple User Management System 1.0 allows remote attackers to execute script via registration fields. Users::userRegistration stores raw name and username values, and index.php later echoes both into the authenticated user table without output encoding. Registration requires no prior account, but execution occurs only when an authenticated user views the user list, allowing script to run in that viewer's browser.

CVSS severity5.3
Medium
EPSS probability0.51%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in Nababur Simple User Management System 1.0 allows remote attackers to execute script via registration fields. Users::userRegistration stores raw name and username values, and index.php later echoes both into the authenticated user table without output encoding. Registration requires no prior account, but execution occurs only when an authenticated user views the user list, allowing script to run in that viewer's browser.

The record

CVE
CVE-2025-3489
Published
Apr 10, 2025
Updated
Apr 10, 2025
Vendor
Nababur
Product
Simple User Management System with PHP MySQL
Classifications
CWE-94, CWE-79, T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 10, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 10, 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=1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Nababur · Simple User Management System with PHP MySQLversion=1.0

Published CVSS scores

6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
5.3VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
5.0VulDBAV:N/AC:L/Au:N/C:N/I:P/A:N
4.3VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:R/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 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-94Improper Control of Generation of Code ('Code Injection')
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007JavaScript/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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