CVE-2026-9125: 2winfactor Presto Player

Medium severity, CVSS 6.4. EPSS: 0.4% chance of exploitation in the next 30 days.

The Presto Player plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'link_url' parameter of the [presto_player_overlay] shortcode in versions up to, and including, 4.2.0 This is due to insufficient input sanitization and output escaping in the getOverlays() function, which copies the link_url shortcode attribute directly into the overlay configuration without scheme validation, allowing javascript: URIs to survive and be rendered as the href of a clickable anchor element by the presto-dynamic-overlay-ui web component. 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 products

• 2winfactor Presto Player: up to and including 4.2.0

Published 2026-06-12. Last modified 2026-08-28.