CVE-2026-2509: Page Builder: Pagelayer <= 2.0.8 - Authenticated (Contributor+) Stored Cross-Site Scripting via Button Widget Custom Attributes
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 'pagelayerxsscontent' 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.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-2509?
The severity of CVE-2026-2509 is considered high due to the potential for authenticated stored cross-site scripting attacks.
How do I fix CVE-2026-2509?
To fix CVE-2026-2509, update the Pagelayer plugin to version 2.0.9 or later.
Who is affected by CVE-2026-2509?
CVE-2026-2509 affects all versions of the Pagelayer plugin for WordPress up to and including version 2.0.8.
What type of vulnerability is CVE-2026-2509?
CVE-2026-2509 is classified as a stored cross-site scripting (XSS) vulnerability.
What can an attacker achieve with CVE-2026-2509?
An attacker exploiting CVE-2026-2509 can inject malicious scripts that execute in the context of the user's browser, potentially leading to data theft or loss of user sessions.