CVE-2026-8877
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.
Does this matter?
Lower severity and a low EPSS score (0.24%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 6.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
- EPSS
- 0.24% probability · 15th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Source
- security@wordfence.com
References
- https://plugins.trac.wordpress.org/browser/responsive-video-embedder/trunk/responsive-video-embedder.php#L152
- https://plugins.trac.wordpress.org/browser/responsive-video-embedder/trunk/responsive-video-embedder.php#L167
- https://www.wordfence.com/threat-intel/vulnerabilities/id/00f5cf90-cc63-4e51-b1be-1152abefc59d?source=cve
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.