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      <title>CVE-2026-109983 — YMC Filter &lt;= 3.12.19 - Authenticated (Author+) Stored DOM-Based Cross-Site Scripting via 'post_title' Parameter</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2026-109983</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; wssoffice21 YMC Filter&lt;/p&gt;
&lt;p&gt;The YMC Filter plugin for WordPress is vulnerable to Stored DOM-Based Cross-Site Scripting via the &amp;#39;post_title&amp;#39; parameter in all versions up to, and including, 3.12.19 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The autocomplete REST endpoint is registered with a permission callback that unconditionally returns true, meaning any site visitor — including unauthenticated users — can trigger the payload simply by typing in the YMC filter search box, while only Author-level access is required to store it.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; wssoffice21 YMC Filter&lt;/p&gt;
&lt;p&gt;The YMC Filter plugin for WordPress is vulnerable to Stored DOM-Based Cross-Site Scripting via the &amp;#39;post_title&amp;#39; parameter in all versions up to, and including, 3.12.19 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The autocomplete REST endpoint is registered with a permission callback that unconditionally returns true, meaning any site visitor — including unauthenticated users — can trigger the payload simply by typing in the YMC filter search box, while only Author-level access is required to store it.&lt;/p&gt;</content:encoded>
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