CVE-2015-9439: Addthis

Medium severity, CVSS 4.8. EPSS: 1% chance of exploitation in the next 30 days.

The addthis plugin before 5.0.13 for WordPress has CSRF with resultant XSS via the wp-admin/options-general.php?page=addthis_social_widget pubid parameter.

Affected products

• Addthis Addthis: before 5.0.13 (fixed in 5.0.13)

Published 2019-09-26. Last modified 2026-06-17.