PT-2026-48818 · WordPress · Presto Player

Dmitry Ignatyev · CVE-2026-9125 · Published 2026-06-12 · Updated 2026-06-12

Positive Technologies (AI Summary)

CVSS v3.1

6.4

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Presto Player versions prior to 4.2.1

Description The Presto Player plugin for WordPress contains a Stored Cross-Site Scripting issue. The getOverlays() function fails to properly sanitize input and escape output, allowing the link url parameter of the [presto player overlay] shortcode to be copied directly into the overlay configuration without scheme validation. This allows javascript: URIs to be rendered as the href of a clickable anchor element by the presto-dynamic-overlay-ui web component. Authenticated attackers with contributor-level access or higher can inject arbitrary web scripts that execute when a user visits the affected page.

Recommendations Update to a version later than 4.2.0. As a temporary workaround, restrict the use of the link url parameter within the [presto player overlay] shortcode.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-9125

Affected Products

Presto Player

References · 13

• https://nvd.nist.gov/vuln/detail/CVE-2026-9125 · Security Note
• https://plugins.trac.wordpress.org/browser/presto-player/tags/4.1.4/templates/video.php#L16 · Note
• https://plugins.trac.wordpress.org/browser/presto-player/tags/4.1.1/inc/Services/Shortcodes.php#L464 · Note
• https://t.me/CVEtracker/56662 · Telegram Post
• 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 · Note
• https://plugins.trac.wordpress.org/changeset/3553268/presto-player/trunk/inc/Services/Shortcodes.php · Note
• https://plugins.trac.wordpress.org/browser/presto-player/tags/4.1.1/templates/video.php#L16 · Note
• https://twitter.com/atomicedgeWAF/status/2065483292824977762 · Twitter Post
• 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 · Note
• https://plugins.trac.wordpress.org/browser/presto-player/tags/4.1.4/inc/Services/Shortcodes.php#L464 · Note
• https://plugins.trac.wordpress.org/browser/presto-player/tags/4.1.4/inc/Services/Shortcodes.php#L513 · Note
• https://wordfence.com/threat-intel/vulnerabilities/id/c87e7f50-f14a-4751-abcb-3a5bdd214889?source=cve · Note
• https://plugins.trac.wordpress.org/browser/presto-player/tags/4.1.1/inc/Services/Shortcodes.php#L513 · Note