The SEO Plugin by Squirrly SEO versions up to 14.2.0 contain an unauthenticated cross-site scripting (XSS) vulnerability (CWE-79) that arises from improper neutralization of input during web page generation. This flaw allows remote attackers to inject malicious scripts without authentication, potentially impacting the confidentiality, integrity, and availability of affected systems. The CVSS 3.1 base score is 7.1, reflecting network attack vector, low attack complexity, no privileges required, user interaction required, and a scope change with low impact on confidentiality, integrity, and availability. No patch or official remediation level has been disclosed by the vendor as of the publication date.

Successful exploitation of this vulnerability can lead to execution of arbitrary scripts in the context of the affected web application, potentially allowing attackers to steal sensitive information, manipulate content, or disrupt service. The vulnerability affects confidentiality, integrity, and availability at a low level but is exploitable remotely without authentication, increasing its risk.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should consider applying workarounds if available or restricting access to the affected plugin functionality. Monitoring for updates from Squirrly SEO is recommended.