Cross Site Scripting Vulnerability in Login With Ajax Plugin by WordPress
CVE-2026-66640

6.5MEDIUM

Key Information:

Vendor

WordPress
Status
Login With Ajax
Vendor
CVE Published:
18 August 2026

What is CVE-2026-66640?

The Login With Ajax plugin for WordPress versions up to 4.5.1 contains a vulnerability that allows an attacker to execute arbitrary JavaScript code in the context of a user's session. This Cross Site Scripting (XSS) flaw could be leveraged to manipulate user sessions, potentially leading to unauthorized access to sensitive information or actions on behalf of the user. It is crucial for users of this plugin to apply necessary updates or implement security measures to mitigate the risk posed by this vulnerability.

Affected Version(s)

Login With Ajax <= 4.5.1

References

https://patchstack.com/database/wordpress/plugin/login-wi...
vdb-entry

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Ananda Dhakal (Patchstack) | Patchstack Bug Bounty Program
.