SEO Plugin by Squirrly SEO, CVE-2026-1667

CVE, Research URL: CVE-2026-1667
Home page URL: Security reports for SEO Plugin by Squirrly SEO
Application: SEO Plugin by Squirrly SEO
Published on: Jul 10, 2026
Research Description: The SEO Plugin by Squirrly SEO plugin for WordPress is vulnerable to Arbitrary Post Creation and Stored Cross-Site Scripting in all versions up to, and including, 14.0.0 due to a leak of an API token and insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to create arbitrary posts, and, if the Advanced Custom Fields plugin is installed and activated, inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Affected versions: max 14.0.1.
Status: vulnerable