CVE-2024-33423Public exploitNetwork attack vector

Stored script execution via unneutralized Logout setting

Published May 1, 2024 · Updated Aug 2, 2024

Stored cross-site scripting in CMSimple 5.15 allows remote attackers to run arbitrary script or HTML through the Logout language setting. The Settings menu saves a crafted Logout value in the Language section and renders it without neutralizing script-related markup. Exploitation requires the Language settings to be reachable and a user to load the resulting interface, where the payload executes in that browser session.

CVSS severity7.4
High
EPSS probability0.56%
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 CMSimple 5.15 allows remote attackers to run arbitrary script or HTML through the Logout language setting. The Settings menu saves a crafted Logout value in the Language section and renders it without neutralizing script-related markup. Exploitation requires the Language settings to be reachable and a user to load the resulting interface, where the payload executes in that browser session.

The record

CVE
CVE-2024-33423
Published
May 1, 2024
Updated
Aug 2, 2024
Vendor
CMSimple
Product
CMSimple
Classifications
CWE-80, T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 1, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.15

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

CMSimple · CMSimpleversion=5.15

Published CVSS scores

7.4CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-80Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)
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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