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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.

PUBLISHED Reserved 2026-02-13 | Published 2026-04-08 | Updated 2026-04-08 | Assigner Wordfence




MEDIUM: 6.4CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Problem types

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Product status

Default status
unaffected

Any version
affected

Timeline

2026-02-13:Vendor Notified
2026-04-07:Disclosed

Credits

Athiwat Tiprasaharn finder

References

www.wordfence.com/...-2bae-4ea6-babb-7e8e99054cd0?source=cve

plugins.trac.wordpress.org/...layer/trunk/main/functions.php

plugins.trac.wordpress.org/...k/main/shortcode_functions.php

plugins.trac.wordpress.org/changeset/3479046/

cve.org (CVE-2026-2509)

nvd.nist.gov (CVE-2026-2509)

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