CVE-2021-24205Public exploitNetwork attack vector

Contributor-level stored XSS via unvalidated Icon Box tag

Published Apr 5, 2021 · Updated Aug 3, 2024

Stored cross-site scripting in Elementor Website Builder before 3.1.4 allows remote authenticated users to execute JavaScript in viewers' browsers. The Icon Box widget in includes/widgets/icon-box.php accepts a crafted title_size value from save_builder and emits it as an HTML tag without server-side validation or output escaping. Contributor-level Elementor editor access is required, and execution occurs when another user views or previews the saved page, exposing that user's session to page modification or site takeover.

CVSS severity5.4
Medium
EPSS probability0.75%
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 Elementor Website Builder before 3.1.4 allows remote authenticated users to execute JavaScript in viewers' browsers. The Icon Box widget in includes/widgets/icon-box.php accepts a crafted title_size value from save_builder and emits it as an HTML tag without server-side validation or output escaping. Contributor-level Elementor editor access is required, and execution occurs when another user views or previews the saved page, exposing that user's session to page modification or site takeover.

The record

CVE
CVE-2021-24205
Published
Apr 5, 2021
Updated
Aug 3, 2024
Vendor
Elementor
Product
Elementor Website Builder
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 5, 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?

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

  1. Affected versionversion=3.1.4 <3.1.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Elementor · Elementor Website Builderversion=3.1.4 <3.1.4

Published CVSS scores

5.4NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
3.5NVDAV: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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