CVE-2021-24202Public exploitNetwork attack vector

JavaScript execution via unchecked heading tag

Published Apr 5, 2021 · Updated Aug 3, 2024

Stored XSS in Elementor Website Builder before 3.1.4 allows remote authenticated users to execute JavaScript through a saved heading. The Heading widget inserts the user-controlled header_size value as the rendered HTML tag while placing the supplied title inside that element. Contributor access is sufficient to submit a modified save_builder request, and the script runs when the affected page is viewed or previewed.

CVSS severity6.4
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 XSS in Elementor Website Builder before 3.1.4 allows remote authenticated users to execute JavaScript through a saved heading. The Heading widget inserts the user-controlled header_size value as the rendered HTML tag while placing the supplied title inside that element. Contributor access is sufficient to submit a modified save_builder request, and the script runs when the affected page is viewed or previewed.

The record

CVE
CVE-2021-24202
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

6.4NISTCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
3.5NISTAV: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

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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