CVE-2026-9125: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in 2winfactor Presto Player
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.
AI Analysis
Technical Summary
CVE-2026-9125 is a stored cross-site scripting vulnerability in the Presto Player WordPress plugin (2winfactor) affecting versions up to 4.2.0. The vulnerability arises from insufficient input sanitization and output escaping in the getOverlays() function, which copies the 'link_url' shortcode attribute directly into the overlay configuration without validating the URI scheme. This allows javascript: URIs to persist and be rendered as href attributes in clickable anchor elements by the presto-dynamic-overlay-ui web component. Attackers with contributor-level privileges or higher can inject malicious scripts that execute in the context of users viewing the compromised pages.
Potential Impact
An attacker with contributor-level or higher privileges can inject arbitrary JavaScript code into pages via the 'link_url' parameter. This malicious code executes in the browsers of users who visit the infected pages, potentially leading to session hijacking, defacement, or other client-side attacks. The vulnerability does not affect availability but impacts confidentiality and integrity of user interactions.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict contributor-level access to trusted users only and consider disabling or removing the Presto Player plugin if possible. Monitor for updates from the vendor regarding patches or official mitigations.
CVE-2026-9125: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in 2winfactor Presto Player
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.
CVSS v3.1
Score 6.4medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-9125 is a stored cross-site scripting vulnerability in the Presto Player WordPress plugin (2winfactor) affecting versions up to 4.2.0. The vulnerability arises from insufficient input sanitization and output escaping in the getOverlays() function, which copies the 'link_url' shortcode attribute directly into the overlay configuration without validating the URI scheme. This allows javascript: URIs to persist and be rendered as href attributes in clickable anchor elements by the presto-dynamic-overlay-ui web component. Attackers with contributor-level privileges or higher can inject malicious scripts that execute in the context of users viewing the compromised pages.
Potential Impact
An attacker with contributor-level or higher privileges can inject arbitrary JavaScript code into pages via the 'link_url' parameter. This malicious code executes in the browsers of users who visit the infected pages, potentially leading to session hijacking, defacement, or other client-side attacks. The vulnerability does not affect availability but impacts confidentiality and integrity of user interactions.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict contributor-level access to trusted users only and consider disabling or removing the Presto Player plugin if possible. Monitor for updates from the vendor regarding patches or official mitigations.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-05-20T17:39:30.319Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a2b6bad815e7002b89de7cb
Added to database: 06/12/2026, 02:15:09 UTC
Last enriched: 06/19/2026, 18:25:22 UTC
Last updated: 07/31/2026, 19:23:00 UTC
Views: 118
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