Reported vulnerability

WPBakery Page Builder for WordPress <= 6.4 - Authenticated (Contributor+) Stored Cross-Site Scripting

Q: Which versions of WPBakery Page Builder are affected?

Wordfence lists these affected versions: Start version unspecified, through 6.4. Use the version checker above to compare your installed release with this report.

Q: Is a fix available for WPBakery Page Builder?

Wordfence reports a fix for this issue in WPBakery Page Builder. It lists these fixed versions: 6.4.1. Back up your website and test the recommended update before applying it to your live site.

Q: Where can I find my installed plugin version?

In WordPress, open Plugins > Installed Plugins and find the version shown beneath the plugin name.

Published 7 Oct 2020

Updated 15 Jul 2025

CVE-2020-28650

Compare your installed software with the affected versions below. Follow the source’s remediation guidance and test an available update after taking a backup. A database entry describes a reported issue; it does not establish whether a particular website has been compromised.

Does this affect my version?

Check your installed version against this advisory. This compares the report’s version ranges and does not scan your website.

Wordfence advisory

medium · CVSS 6.4

The WPBakery plugin for WordPress, in versions 6.4 and below, was designed with a flaw that could give users with contributor and author level roles the ability to inject malicious JavaScript into pages and posts. This flaw also gave these users the ability to edit other users’ posts. The plugin explicitly disabled any default post HTML filtering checks in the saveAjaxFe function using kses_remove_filters();. This meant that any user with access to the WPBakery builder could inject HTML and JavaScript anywhere in a post using the page builder.

Severity vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

WPBakery Page Builder

Software: plugin · js_composer
Affected versions: Start version unspecified, through 6.4
Fix availability: Fix available
Fixed versions: 6.4.1

Recommended action

Update to version 6.4.1, or a newer patched version

Further references (1)

wordfence.com/threat-intel/vulnerabilities/id/1fab5d06-ff39-4b7c-808b-bd199c2a3329?source=api-prod

Data sources and licences

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CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE®). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy.

Read licence terms

Source: Wordfence

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Questions about this vulnerability

Which versions of WPBakery Page Builder are affected?

Wordfence lists these affected versions: Start version unspecified, through 6.4. Use the version checker above to compare your installed release with this report.

Is a fix available for WPBakery Page Builder?

Wordfence reports a fix for this issue in WPBakery Page Builder. It lists these fixed versions: 6.4.1. Back up your website and test the recommended update before applying it to your live site.

Where can I find my installed plugin version?

In WordPress, open Plugins > Installed Plugins and find the version shown beneath the plugin name.

Does an affected version mean my website has been hacked?

An affected version means the installed release matches a vulnerability described in this report. It does not show whether anyone has exploited it on your website. The checker compares version numbers with stored reports; it does not inspect your website.

These reports cover at least one of the same plugins, themes or WordPress core. Check each report’s affected versions separately.

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