CVE-2026-4082

Description

The ER Swiffy Insert plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the [swiffy] shortcode in all versions up to and including 1.0.0. This is due to insufficient input sanitization and output escaping on user-supplied shortcode attributes ('n', 'w', 'h'). These attributes are extracted using extract() and directly interpolated into the HTML output without any escaping such as esc_attr(). 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.

References

• https://plugins.trac.wordpress.org/browser/er-swiffy-insert/tags/1.0.0/er-swiffy-insert.php#L49
• https://plugins.trac.wordpress.org/browser/er-swiffy-insert/tags/1.0.0/er-swiffy-insert.php#L56
• https://plugins.trac.wordpress.org/browser/er-swiffy-insert/trunk/er-swiffy-insert.php#L49
• https://plugins.trac.wordpress.org/browser/er-swiffy-insert/trunk/er-swiffy-insert.php#L56
• https://www.wordfence.com/threat-intel/vulnerabilities/id/074d9712-9b26-47da-9e24-49854fd7257c?source=cve