CVE-2024-21724Network attack vector

Cross-site scripting via unvalidated media fields

Published Feb 20, 2024 · Updated Mar 29, 2025

Cross-site scripting in Joomla! CMS 1.6.0 through 3.10.14, 4.0.0 through 4.4.2, and 5.0.0 through 5.0.2 allows remote attackers to run script. The advisory identifies inadequate input validation in media selection fields across various extensions but does not disclose the specific files, functions, or output path. Exploitation requires a victim to interact with crafted content; successful script execution can read or modify data available to the affected page.

CVSS severity6.1
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

Cross-site scripting in Joomla! CMS 1.6.0 through 3.10.14, 4.0.0 through 4.4.2, and 5.0.0 through 5.0.2 allows remote attackers to run script. The advisory identifies inadequate input validation in media selection fields across various extensions but does not disclose the specific files, functions, or output path. Exploitation requires a victim to interact with crafted content; successful script execution can read or modify data available to the affected page.

The record

CVE
CVE-2024-21724
Published
Feb 20, 2024
Updated
Mar 29, 2025
Vendor
Joomla! Project
Product
Joomla! CMS
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 20, 2024CVE publishedPublication date reported by the CVE source.
  2. Mar 29, 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=1.6.0-3.10.14
  2. Affected versionversion=4.0.0-4.4.2
  3. Affected versionversion=5.0.0-5.0.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Joomla! Project · Joomla! CMSversion=1.6.0-3.10.14; version=4.0.0-4.4.2; version=5.0.0-5.0.2

Published CVSS scores

6.1National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:N/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

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

No public exploit references are available in this record.

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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