CVE-2026-8877
Responsive Video Embedder <= 0.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes
- State
- Published
- Severity
- 6.4 Medium
- Published
- May 27, 2026
- Updated
- May 27, 2026
- Reserved
- May 18, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 6.4 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N | Wordfence |
Weaknesses
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products
| Product | Versions |
|---|---|
Responsive Video Embedderesiteq |
|
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/00f5cf90-cc63-4e51-b1be-1152abefc59d?source=cve
- https://plugins.trac.wordpress.org/browser/responsive-video-embedder/trunk/responsive-video-embedder.php#L167
- https://plugins.trac.wordpress.org/browser/responsive-video-embedder/trunk/responsive-video-embedder.php#L152
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