CVE-2020-37240Public exploitNetwork attack vector

Stored XSS via unescaped Add User fields

Published May 16, 2026 · Updated May 16, 2026

Stored XSS in CodeKernel Queue Management System 4.0.0 allows remote authenticated users to execute JavaScript through user fields. The Add User workflow stores First Name, Last Name, and Email values, and the User List page renders them without neutralizing HTML or JavaScript. Administrative access is required to plant the payload, and execution occurs when a user opens the User List page.

CVSS severity5.1
Medium
EPSS probability0.24%
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 CodeKernel Queue Management System 4.0.0 allows remote authenticated users to execute JavaScript through user fields. The Add User workflow stores First Name, Last Name, and Email values, and the User List page renders them without neutralizing HTML or JavaScript. Administrative access is required to plant the payload, and execution occurs when a user opens the User List page.

The record

CVE
CVE-2020-37240
Published
May 16, 2026
Updated
May 16, 2026
Vendor
CodeKernel
Product
Queue Management System
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. May 16, 2026CVE publishedPublication date reported by the CVE source.
  2. May 16, 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=4.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

CodeKernel · Queue Management Systemversion=4.0.0

Published CVSS scores

6.4VulnCheckCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
5.1VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:L/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

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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