High severity · published Aug 20, 2026
CVE-2026-66614
WordPress SEO Plugin by Squirrly SEO plugin <= 14.2.2 - Cross Site Scripting (XSS) vulnerability
7.1
CVSS
0.3%
EPSS
No
On KEV
Description
Unauthenticated Cross Site Scripting (XSS) in SEO Plugin by Squirrly SEO <= 14.2.2 versions.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
Low
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 16% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SP
SEO Plugin by Squirrly SEO · SEO Squirrly
through 14.2.2 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-66614
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-66614
patchstack.com
https://patchstack.com/database/wordpress/plugin/squirrly-seo/vulnerability/wordpress-seo-plugin-by-squirrly-seo-plugin-14-2-2-cross-site-scripting-xss-vulnerability?_s_id=cve
More from SEO Plugin by Squirrly SEO
8.8
CVE-2026-94076
WordPress SEO Plugin by Squirrly SEO plugin <= 14.2.5 - PHP Object Injection vulnerability
8.8
CVE-2025-22783
WordPress SEO Plugin by Squirrly SEO plugin <= 12.4.03 - SQL Injection vulnerability
7.1
CVE-2026-66664
WordPress SEO plugin by Squirrly SEO plugin <= 14.2.0 - Cross Site Scripting (XSS) vulnerability
5.9
CVE-2026-52714
WordPress SEO Plugin by Squirrly SEO plugin <= 12.4.16 - Broken Access Control vulnerability