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CVE-2026-8877

MEDIUM 6.4 CVSS 3.1
Published
May 27, 2026
Last modified
June 17, 2026
NVD status
Deferred
Reported by
security@wordfence.com
Weakness
CWE-79
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

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.

Affected WordPress components

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • esiteq Responsive Video Embedder — Up to and including 0.1

References

  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/responsive-video-embedder/trunk/responsive-video-embedder.php#L152
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/responsive-video-embedder/trunk/responsive-video-embedder.php#L167
  • www.wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/00f5cf90-cc63-4e51-b1be-1152abefc59d?source=cve
  • nvd.nist.gov Official NVD record