CVE-2026-14343

Description

The Download Manager plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'note_before' and 'note_after' Shortcode Attributes in all versions up to, and including, 3.3.61 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Because wp_kses_post filters post content on save for users without unfiltered_html, only kses-allowed tag and attribute payloads that survive save-time filtering will reach the unescaped sink; however, the sink itself remains unsafe and such payloads can still execute in the browser when a user renders the shortcode.

CVSS Vector

References

• https://plugins.trac.wordpress.org/browser/download-manager/tags/3.3.61/src/User/Register.php#L123
• https://plugins.trac.wordpress.org/browser/download-manager/tags/3.3.61/src/User/Register.php#L32
• https://plugins.trac.wordpress.org/browser/download-manager/tags/3.3.61/src/User/views/reg-form.php#L69
• https://plugins.trac.wordpress.org/browser/download-manager/tags/3.3.61/src/User/views/reg-form.php#L78
• https://plugins.trac.wordpress.org/changeset?reponame=&old=3594267%40download-manager&new=3594267%40download-manager
• https://www.wordfence.com/threat-intel/vulnerabilities/id/74cd34be-008c-4ff3-ae3c-417cfd2fee9b?source=cve