Description
WordPress Plugin All in One SEO-Best WordPress SEO-Easily Improve Your SEO Rankings is prone to a cross-site scripting vulnerability because it fails to properly sanitize user-supplied input. An attacker may leverage this issue to execute arbitrary script code in the browser of an unsuspecting user in the context of the affected site. This can allow the attacker to steal cookie-based authentication credentials and launch other attacks. WordPress Plugin All in One SEO-Best WordPress SEO-Easily Improve Your SEO Rankings version 2.3.7 is vulnerable; prior versions may also be affected.
Remediation
Update to plugin version 2.3.8 or latest
References
https://www.wordfence.com/blog/2016/07/new-xss-vulnerability-all-in-one-seo-pack/
https://semperfiwebdesign.com/blog/all-in-one-seo-pack/all-in-one-seo-pack-release-history/
Related Vulnerabilities
WordPress Plugin Product Catalog Arbitrary File Upload (3.1.1)
WordPress Plugin Injectscr Spam Injection (All)
WordPress Plugin Featured Post with thumbnail Unspecified Vulnerability (1.4)
WordPress Plugin Comment Extra Fields 'cef-upload.php' Arbitrary File Upload (1.7)
WordPress Plugin Contact Form Submissions Unspecified Vulnerability (1.2)