Vulnerability 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.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://plugins.trac.wordpress.org/changeset?reponame=&new=3586051%40squirrly-se
- https://www.wordfence.com/threat-intel/vulnerabilities/id/aebdd464-10b9-4d43-bf3
FAQ
What is CVE-2026-1667?
CVE-2026-1667 is a vulnerability with a CVSS score of 7.2 (HIGH). 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 ...
How severe is CVE-2026-1667?
CVE-2026-1667 has been rated HIGH with a CVSS base score of 7.2/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-1667?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.