CVE-2020-13660Public exploitNetwork attack vector

Stored XSS via unescaped File Picker profile name

Published May 28, 2020 · Updated Aug 4, 2024

Stored XSS in CMS Made Simple 2.2.14 and earlier allows remote authenticated users to execute scripts via a File Picker profile name. The File Picker profile form stores the Name value and renders it in its page template without escaping, allowing an injected SVG event handler to run when the page is revisited. Exploitation requires a high-privilege Admin Console account and a victim to view the File Picker page; script execution can read or alter data available to that browser session.

CVSS severity4.8
Medium
EPSS probability0.69%
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 CMS Made Simple 2.2.14 and earlier allows remote authenticated users to execute scripts via a File Picker profile name. The File Picker profile form stores the Name value and renders it in its page template without escaping, allowing an injected SVG event handler to run when the page is revisited. Exploitation requires a high-privilege Admin Console account and a victim to view the File Picker page; script execution can read or alter data available to that browser session.

The record

CVE
CVE-2020-13660
Published
May 28, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. May 28, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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 privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

3.5NVDAV:N/AC:M/Au:S/C:N/I:P/A:N
4.8NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/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 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')
T1059.007Command and Scripting Interpreter: JavaScript

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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