CVE-2026-66640
Received Received - Intake

Login With Ajax XSS Vulnerability in <= 4.5.1

Publication date: 2026-08-18

Last updated on: 2026-08-18

Assigner: Patchstack

Description
Contributor Cross Site Scripting (XSS) in Login With Ajax <= 4.5.1 versions.

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Meta Information

Published
2026-08-18
Last Modified
2026-08-18
Generated
2026-08-18
AI Q&A
2026-08-18
EPSS Evaluated
N/A
NVD
CVE-2026-66640
EUVD
EUVD-2026-60925

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
wpbeaverbuilder login_with_ajax to 4.5.1 (inc)
jquery login_with_ajax to 4.5.1 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

Attack-Flow Graph

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Executive Summary

This is a Cross Site Scripting (XSS) vulnerability in the WordPress Login With Ajax Plugin versions 4.5.1 and below. It allows attackers to inject malicious scripts into the website through user interaction, such as clicking a malicious link or visiting a crafted page.

Detection Guidance

Check if the Login With Ajax plugin version 4.5.1 or below is installed on your WordPress site. Inspect the plugin files for suspicious scripts or unauthorized modifications. Review server logs for unusual activity related to the plugin.

Impact Analysis

A successful exploit could let attackers inject scripts that execute when guests visit the site. This might lead to actions like redirects, displaying unwanted ads, or stealing user data. The impact requires a privileged user to trigger the attack.

Mitigation Strategies

Disable or remove the Login With Ajax plugin immediately if it is version 4.5.1 or below. Contact your hosting provider or web developer for assistance in updating or replacing the plugin. Monitor your website for any signs of compromise or unauthorized changes.

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