The yoast_seo (aka Yoast SEO) extension before 7.2.3 for TYPO3 allows XSS.

The yoast_seo (aka Yoast SEO) extension before 7.2.1 for TYPO3 allows SSRF via a backend user account.

Yoast SEO 16.7-17.2 - Unauthenticated Full Path Disclosure

The Yoast SEO WordPress plugin (from versions 16.7 until 17.2) discloses the full internal path of featured images in posts via the wp/v2/posts REST endpoints which could help an attacker identify other vulnerabilities or help during the exploitation of other identified vulnerabilities.

Yoast SEO < 3.4.1 - Authenticated Stored Cross-Site Scripting (XSS)

A Stored Cross-Site Scripting vulnerability was discovered in the Yoast SEO WordPress plugin before 3.4.1, which had built-in blacklist filters which were blacklisting Parenthesis as well as several functions such as alert but bypasses were found.

The Yoast SEO plugin before 11.6-RC5 for WordPress does not properly restrict unfiltered HTML in term descriptions.

A Race condition vulnerability in unzip_file in admin/import/class-import-settings.php in the Yoast SEO (wordpress-seo) plugin before 9.2.0 for WordPress allows an SEO Manager to perform command execution on the Operating System via a ZIP import.