CVE-2026-8877
Deferred Deferred - Pending Action
Stored XSS in Responsive Video Embedder WordPress Plugin

Publication date: 2026-05-27

Last updated on: 2026-05-27

Assigner: Wordfence

Description
The Responsive Video Embedder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'rem_video' shortcode in versions up to, and including, 0.1. This is due to insufficient input sanitization and output escaping on user supplied attributes (notably 'id' and 'list') in the video_shortcode() function, which are concatenated directly into an HTML iframe's src attribute without escaping. 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.
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Meta Information
Published
2026-05-27
Last Modified
2026-05-27
Generated
2026-06-16
AI Q&A
2026-05-27
EPSS Evaluated
2026-06-15
NVD
CVE-2026-8877
EUVD
EUVD-2026-32053
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
wp_media responsive_video_embedder to 0.1 (inc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
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Executive Summary

The Responsive Video Embedder plugin for WordPress has a Stored Cross-Site Scripting (XSS) vulnerability in versions up to and including 0.1. This occurs because the plugin does not properly sanitize or escape user-supplied attributes, specifically 'id' and 'list', in the rem_video shortcode. These attributes are directly inserted into an iframe's src attribute without escaping, allowing authenticated users with contributor-level access or higher to inject malicious scripts that execute when other users view the affected pages.

Impact Analysis

This vulnerability can allow attackers with contributor-level access to inject arbitrary malicious scripts into pages. When other users access these pages, the injected scripts execute in their browsers, potentially leading to theft of sensitive information, session hijacking, or other malicious actions. This compromises the security and integrity of the affected WordPress site and its users.

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