# CVE-2026-9125: Presto Player Stored XSS in presto_player_overlay shortcode

Source: https://junglewise.ai/threats/cve-2026-9125-presto-player-stored-xss-in-presto-player-overlay-shortcode  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-12. Updated: 2026-06-12  
License: CC BY 4.0 with a link back

CVE-2026-9125 · Severity: medium · CVSS 6.4 · Published 2026-06-12

Presto Player, a popular video player plugin for WordPress, contains a security flaw that allows users with contributor-level access or higher to inject malicious scripts into website pages. These scripts execute automatically when other users, including site administrators, visit the affected pages. This could lead to unauthorized actions being performed on behalf of visitors or the theft of sensitive session information.

## Quick answers

**Is CVE-2026-9125 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-9125 being exploited in the wild.

**How severe is CVE-2026-9125?** Medium severity, with a CVSS score of 6.4, published 12 June 2026.

**Which products and versions are affected?** Presto Made Presto Player up to, and including, 4.2.0.

**Is there a fix for CVE-2026-9125?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-9125 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-9125?** Check whether anything you run is named in the advisory. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The Presto Player plugin for WordPress is vulnerable to Stored Cross-Site Scripting (XSS) due to insufficient input sanitization and output escaping in the getOverlays() function. Specifically, the 'link_url' attribute of the [presto_player_overlay] shortcode is copied directly into the overlay configuration without proper scheme validation. This allows 'javascript:' URIs to be rendered as the href attribute of a clickable anchor element within the presto-dynamic-overlay-ui web component. Authenticated attackers with contributor-level permissions or higher can exploit this to inject arbitrary web scripts. The vulnerability is present in versions up to and including 4.2.0 and has been addressed in subsequent updates.

## Affected products

- Presto Made Presto Player up to, and including, 4.2.0

## Timeline

- 2026-06-12: advisory: NVD publication date

## References

- [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](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)
- [https://plugins.trac.wordpress.org/browser/presto-player/tags/4.1.1/inc/Services/Shortcodes.php](https://plugins.trac.wordpress.org/browser/presto-player/tags/4.1.1/inc/Services/Shortcodes.php)
- [https://plugins.trac.wordpress.org/browser/presto-player/tags/4.1.1/inc/Services/Shortcodes.php](https://plugins.trac.wordpress.org/browser/presto-player/tags/4.1.1/inc/Services/Shortcodes.php)
- [https://plugins.trac.wordpress.org/browser/presto-player/tags/4.1.1/templates/video.php](https://plugins.trac.wordpress.org/browser/presto-player/tags/4.1.1/templates/video.php)
- [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](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)
- [https://plugins.trac.wordpress.org/browser/presto-player/tags/4.1.4/inc/Services/Shortcodes.php](https://plugins.trac.wordpress.org/browser/presto-player/tags/4.1.4/inc/Services/Shortcodes.php)
- [https://plugins.trac.wordpress.org/browser/presto-player/tags/4.1.4/inc/Services/Shortcodes.php](https://plugins.trac.wordpress.org/browser/presto-player/tags/4.1.4/inc/Services/Shortcodes.php)