CVE-2026-66664

WordPress SEO plugin by Squirrly SEO plugin <= 14.2.0 - Cross Site Scripting (XSS) vulnerability

Published Aug 6, 2026 CVSS 3.1 · 7.1 High EPSS < 1% KEV · Not listed
Description
Unauthenticated Cross Site Scripting (XSS) in SEO Plugin by Squirrly SEO <= 14.2.0 versions.

Remediation

Vendor Solution

Update the WordPress SEO Plugin by Squirrly SEO plugin to the latest available version (at least 14.2.1).

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Squirrly
Squirrly seo Plugin By Squirrly Seo
Wordpress
Wordpress wordpress
Vendors & Products Squirrly
Squirrly seo Plugin By Squirrly Seo
Wordpress
Wordpress wordpress
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Unauthenticated Cross Site Scripting (XSS) in SEO Plugin by Squirrly SEO <= 14.2.0 versions.
Title WordPress SEO plugin by Squirrly SEO plugin <= 14.2.0 - Cross Site Scripting (XSS) vulnerability
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 7.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Patchstack
Published
Updated
Aug 8, 2026, 1:56 AM
Reserved
Jul 27, 2026, 2:00 PM
Status
Deferred
Published
Aug 6, 2026, 3:17 PM
Modified
Oct 24, 2026, 4:10 PM