Unauthenticated XSS Vulnerability in Facebook for WordPress Plugin
CVE-2026-66705

7.1HIGH

Key Information:

Vendor

WordPress
Status
Facebook For WordPress
Vendor
CVE Published:
6 August 2026

What is CVE-2026-66705?

A vulnerability in the Facebook for WordPress plugin allows for unauthenticated cross-site scripting (XSS). Attackers can exploit this vulnerability to inject malicious scripts into webpages viewed by users. This can lead to unauthorized actions, data theft, or the risk of a compromised website. Users running version 5.2.1 or earlier of the Facebook for WordPress plugin are advised to take immediate steps to update their installations to mitigate potential attacks.

Affected Version(s)

Facebook for WordPress <= 5.2.1

References

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

CVSS V3.1

Score:
7.1
Severity:
HIGH
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Rafie Muhammad | Patchstack Bug Bounty Program
.