CVE-2023-0268Public exploitNetwork attack vector

Stored XSS via unescaped shortcode attributes

Published May 8, 2023 · Updated Jan 28, 2025

Stored XSS in Mega Addons For WPBakery Page Builder before 4.3.0 allows remote authenticated users to execute script via crafted shortcodes. The vc_testimonial shortcode returns its link attribute to page output without validating or escaping attacker-controlled quote and event-handler syntax. Contributor access is required to store the payload, and a victim must view or interact with the affected page for the browser to run it in the site's origin.

CVSS severity5.4
Medium
EPSS probability0.44%
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 Mega Addons For WPBakery Page Builder before 4.3.0 allows remote authenticated users to execute script via crafted shortcodes. The vc_testimonial shortcode returns its link attribute to page output without validating or escaping attacker-controlled quote and event-handler syntax. Contributor access is required to store the payload, and a victim must view or interact with the affected page for the browser to run it in the site's origin.

The record

CVE
CVE-2023-0268
Published
May 8, 2023
Updated
Jan 28, 2025
Vendor
TopDigitalTrends
Product
Mega Addons For WPBakery Page Builder
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 8, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 28, 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=0 <4.3.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

TopDigitalTrends · Mega Addons For WPBakery Page Builderversion=0 <4.3.0

Published CVSS scores

5.4CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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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