Description
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
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
2winfactor Presto Player
Default version status: unaffected
0 to ≤ 4.2.0affected
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/c87e7f50-f14a-4751-abcb-3a5bdd214889?source=cve ↗
- https://plugins.trac.wordpress.org/browser/presto-player/tags/4.1.4/inc/Services/Shortcodes.php#L464 ↗
- https://plugins.trac.wordpress.org/browser/presto-player/tags/4.1.4/inc/Services/Shortcodes.php#L513 ↗
- https://plugins.trac.wordpress.org/browser/presto-player/tags/4.1.4/templates/video.php#L16 ↗
- https://plugins.trac.wordpress.org/browser/presto-player/tags/4.1.4/dist/components/collection/components/core/features/presto-dynamic-overlays/component/presto-dynamic-overlays.js#L1 ↗
- https://plugins.trac.wordpress.org/browser/presto-player/tags/4.1.1/inc/Services/Shortcodes.php#L464 ↗
- https://plugins.trac.wordpress.org/browser/presto-player/tags/4.1.1/inc/Services/Shortcodes.php#L513 ↗
- https://plugins.trac.wordpress.org/browser/presto-player/tags/4.1.1/templates/video.php#L16 ↗
- https://plugins.trac.wordpress.org/browser/presto-player/tags/4.1.1/dist/components/collection/components/core/features/presto-dynamic-overlays/component/presto-dynamic-overlays.js#L1 ↗
- https://plugins.trac.wordpress.org/changeset/3553268/presto-player/trunk/inc/Services/Shortcodes.php ↗
- https://research.cleantalk.org/cve-2026-9125/ ↗