CVE-2026-66705 HIGH

CVE-2026-66705: WordPress Facebook for WordPress plugin <= 5.2.1 - Cross Site Scripting (XSS) vulnerability

Vendor Facebook
Product Facebook for WordPress
Weakness CWE-79 · XSS
Published August 6, 2026
Last update August 6, 2026
View on NVD All CVEs

CVSS base score

7.1/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality Low
Integrity Low

CVSS vector

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

What the vulnerability does

01Description

Unauthenticated Cross Site Scripting (XSS) in Facebook for WordPress <= 5.2.1 versions.

Explanation of Vulnerability in Simple Terms

02Summary

The Facebook for WordPress plugin through version 5.2.1 contains a stored cross-site scripting (XSS) vulnerability. An attacker can inject malicious scripts that execute in the browsers of site visitors or administrators. The vulnerability requires user interaction to trigger and can affect multiple users across the site. Update the plugin to a version newer than 5.2.1.

What an attacker can do

03Attacker Capabilities

Inject malicious scripts that run in visitors' browsers, potentially stealing credentials or session tokens.

Potential impact on your site

04Site Impact

Visitors and admins may have their sessions hijacked or credentials stolen through malicious scripts.

Conditions required to exploit

05Prerequisites

No authentication required. Victim must visit a page containing the injected payload.

Key dates

06Disclosure timeline

August 6, 2026 CVE published
August 6, 2026 Record updated