CVE-2026-2509

Description

The Page Builder: Pagelayer plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Button widget's Custom Attributes field in all versions up to, and including, 2.0.8. This is due to an incomplete event handler blocklist in the 'pagelayer_xss_content' XSS filtering function, which blocks common, but not all, event handlers. 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/pagelayer/trunk/main/functions.php#L1293
• https://plugins.trac.wordpress.org/browser/pagelayer/trunk/main/shortcode_functions.php#L689
• https://plugins.trac.wordpress.org/changeset/3479046/
• https://www.wordfence.com/threat-intel/vulnerabilities/id/915c119d-2bae-4ea6-babb-7e8e99054cd0?source=cve