CVE-2021-28000Public exploitNetwork attack vector

Stored script execution via unescaped person fields

Published Aug 19, 2021 · Updated Aug 3, 2024

Cross-site scripting in Local Services Search Engine Management System 1.0 allows remote authenticated users to run script in a victim's browser. The add-person.php handler accepts crafted name and address values, stores them, and renders them without neutralizing script markup on view-category-detail.php and single-person-detail.php. Administrative access is required to submit the payload, and execution occurs when another user opens an affected person or category detail page.

CVSS severity4.8
Medium
EPSS probability0.93%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in Local Services Search Engine Management System 1.0 allows remote authenticated users to run script in a victim's browser. The add-person.php handler accepts crafted name and address values, stores them, and renders them without neutralizing script markup on view-category-detail.php and single-person-detail.php. Administrative access is required to submit the payload, and execution occurs when another user opens an affected person or category detail page.

The record

CVE
CVE-2021-28000
Published
Aug 19, 2021
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 19, 2021CVE 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
3.5NIST NVDAV:N/AC:M/Au:S/C:N/I:P/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

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