PT-2026-26720 · Anssilaitila · Contact List – Online Staff Directory & Address Book

Tharadol Suksamran · Published 2026-03-20 · Updated 2026-03-21 · CVE-2026-3516

NVD

CVSS v3.1

6.4

Medium

AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

The Contact List plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ' cl map iframe' parameter in all versions up to, and including, 3.0.18. This is due to insufficient input sanitization and output escaping when handling the Google Maps iframe custom field. The saveCustomFields() function in class-contact-list-custom-fields.php uses a regex to extract tags from user input but does not validate or sanitize the iframe's attributes, allowing event handlers like 'onload' to be included. The extracted iframe HTML is stored via update post meta() and later rendered on the front-end in class-cl-public-card.php without any escaping or wp kses filtering. 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.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-3516

Affected Products

Contact List – Online Staff Directory & Address Book

References · 9

• https://nvd.nist.gov/vuln/detail/CVE-2026-3516 · Security Note
• https://plugins.trac.wordpress.org/changeset/3486445 · Note
• https://plugins.trac.wordpress.org/browser/contact-list/tags/3.0.17/includes/class-contact-list-custom-fields.php#L697 · Note
• https://plugins.trac.wordpress.org/browser/contact-list/trunk/includes/class-contact-list-custom-fields.php#L675 · Note
• https://plugins.trac.wordpress.org/browser/contact-list/trunk/public/class-cl-public-card.php#L466 · Note
• https://plugins.trac.wordpress.org/browser/contact-list/tags/3.0.17/public/class-cl-public-card.php#L466 · Note
• https://plugins.trac.wordpress.org/browser/contact-list/tags/3.0.17/includes/class-contact-list-custom-fields.php#L675 · Note
• https://wordfence.com/threat-intel/vulnerabilities/id/a8059995-55cb-49ee-add1-f5364d0772eb?source=cve · Note
• https://plugins.trac.wordpress.org/browser/contact-list/trunk/includes/class-contact-list-custom-fields.php#L697 · Note